Grand Seiko Spring Drive

Presented in 1998 and introduced on the market in 1999, Spring Drive movements have become over the years one of the highlights of the Grand Seiko brand.

This unique technology, the result of decades of research and development, masterfully combines the art of mechanical watchmaking with the precision of quartz.

History of the Spring Drive

In the late 1970s quartz watches were rapidly replacing mechanical ones. It was around that time that engineer Yoshikazu Akahane, employed at Seiko’s Suwa branch, dreamed of a mechanical watch as precise as a quartz one.

It is said that Akahane had an intuition in 1978, when he observed a bicycle descending a hill road at a constant speed thanks to the use of the brakes.

The concept of braking the watch hands, producing a fluid and precise movement without the use of a balance wheel, is the basis of Spring Drive.

Yoshikazu Akahane
First prototype,1982

In his spare time and on his own initiative, Akahane began to study and draw sketches, but the technologies to create a working model based on his idea did not yet exist at the time.

After several years, during which Akahane returned from time to time to work on his project, in 1982 a first working prototype was completed, even though it only worked for 4 hours.

The turning point came in 1997, when Akahane was placed in charge of the company’s entire watch development division, and decided to make the development of the Spring Drive a top priority.

After more than two decades of research and development, and a total of hundreds of prototypes, the engineer’s dream finally comes true, with the introduction of the first watches with Spring Drive movement.

How does it work

Just like traditional mechanical watches, Spring Drives are powered by a mainspring, which is wound by turning the crown or by an oscillating weight driven by the movement of the wrist.

The energy stored in the mainspring is then transferred to the gears, which determine the movement of the watch hands. There are no batteries of any kind in the Spring Drive: the spring is the only source of energy used to make the watch work.

The fundamental difference compared to traditional mechanical movements is the absence of the balance wheel, which in the Spring Drive is replaced by a Tri-synchro regulator.

The term “Try-syncro” derives from the fact that three different types of energy come into play:

  • mechanical, coming directly from the mainspring
  • electrical, converted from mechanical energy to power the quartz oscillator
  • electromagnetic, to apply a brake via a permanent magnet, which allows to precisely adjust the speed of the hands

One of the main characteristics of the Spring Drive is the smooth glide motion of the second hand, which perfectly represents the natural flow of time.

The Spring Drive movements found in Grand Seiko watches are assembled by hand, and are generally composed of between 200 and 500 parts, depending on the type and quantity of complications.

Each component of the watch is produced in-house, including the quartz crystals, and all finishes are hand-made by highly experienced watchmakers.

Early Spring Drive watches

After more than two decades of development and dozens of prototypes, in 1998 Seiko presented the first official working Spring Drive prototype in Basel.

1998 prototype
1998 prototype

The following year, in 1999, the first commercial models were introduced, with three limited editions respectively of 500, 300 and 100 units, exclusively for the Japanese market.

The movement used for these models (7R68 or 7R78) is manually wound with a reserve of approximately 48 hours.

The first of the three models, with reference SBWA001 (7R68-0A10), produced in 500 pieces, comes with a stainless steel case and a particular integrated bracelet.

SBWA001
First Spring Drive introduced in 1999, ref. SBWA001

The second model, with reference SBWA002 (7R68-0A20), comes with a solid gold case and leather strap, in a limited edition of only 300 pieces.

The third model differs from the previous ones to be Credor brand, has a platinum case and leather strap and is produced in only 100 pieces, with reference GBLG999 (7R78-0A10).

The 7R78 movement used on the Credor has all the same technical characteristics of the 7R68 that we find in the other two Seiko-branded models, but there are some differences in the finishes.

Caliber 9R65

After more years of research and development to refine the new technology and bring the power reserve to 72 hours, in 2004 the 9R65 movement made its debut. The reference SBGA001 is the first Spring Drive watch to sport the Grand Seiko brand.

The introduction of this self-winding Spring Drive movement marks a turning point for Grand Seiko.

TypeSpring Drive Automatic
Accuracy±1 sec/day (±15 sec/month)
Power reserve72 hours
Jewels30 jewels
ComplicationsDate, power reserve indicator
InstructionsInstructions 9R65

All Grand Seiko 9R65 watches

SBGA001

SBGA001

Case reference: 9R65-0AA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2004

SBGA003

SBGA003

Case reference: 9R65-0AA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2004

SBGA005

SBGA005

Case reference: 9R65-0AB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2004

SBGA007

SBGA007

Case reference: 9R65-0AC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2005

SBGA009

SBGA009

Case reference: 9R65-0AD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2005

SBGA011

SBGA011

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2005

SBGA013

SBGA013

Case reference: 9R65-0AF0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2005

SBGA015

SBGA015

Case reference: 9R65-0AG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2006

SBGA017

SBGA017

Case reference: 9R65-0AJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2006

SBGA019

SBGA019

Case reference: 9R65-0AH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2006

SBGA021

SBGA021

Case reference: 9R65-0AK0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2006

SBGA023

SBGA023

Case reference: 9R65-0AL0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2007

SBGA025

SBGA025

Case reference: 9R65-0AG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA027

SBGA027

Case reference: 9R65-0AG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA029

SBGA029

Case reference: 9R65-0AM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2008

SBGA031

SBGA031

Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2008

SBGA033

SBGA033

Case reference: 9R65-0AP0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2009

SBGA035

SBGA035

Case reference: 9R65-0AR0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2009

SBGA037

SBGA037

Case reference: 9R65-0AG1
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2009

SBGA039

SBGA039

Case reference: 9R65-0AS0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA041

SBGA041

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2009

SBGA043

SBGA043

Case reference: 9R65-0AG1
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA045

SBGA045

Case reference: 9R65-0AG1
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA047

SBGA047

Case reference: 9R65-0AG1
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA049

SBGA049

Case reference: 9R65-0AG1
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2009

SBGA051

SBGA051

Case reference: 9R65-0AT0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2010

SBGA053

SBGA053

Case reference: 9R65-0AW0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2010

SBGA057

SBGA057

Case reference: 9R65-0AX0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2011

SBGA059

SBGA059

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2010

SBGA061

SBGA061

Case reference: 9R65-0AY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2011

SBGA063

SBGA063

Case reference: 9R65-0AZ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012

SBGA065

SBGA065

Case reference: 9R65-0AB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Platinum
Year: 2010

SBGA067

SBGA067

Case reference: 9R65-0BA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012

SBGA069

SBGA069

Case reference: 9R65-0BC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012

SBGA070

SBGA070

Case reference: 9R65-0BB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2009

SBGA071

SBGA071

Case reference: 9R65-0BF0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012

SBGA073

SBGA073

Case reference: 9R65-0BD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA075

SBGA075

Case reference: 9R65-0BD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA077

SBGA077

Case reference: 9R65-0BE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012

SBGA079

SBGA079

Case reference: 9R65-0BG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2012

SBGA081

SBGA081

Case reference: 9R65-0BG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2012

SBGA083

SBGA083

Case reference: 9R65-0BH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA085

SBGA085

Case reference: 9R65-0BH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA087

SBGA087

Case reference: 9R65-0BK0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA093

SBGA093

Case reference: 9R65-0BJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA095

SBGA095

Case reference: 9R65-0BN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA097

SBGA097

Case reference: 9R65-0BL0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA099

SBGA099

Case reference: 9R65-0BM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA101

SBGA101

Case reference: 9R65-0BM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2013

SBGA111

SBGA111

Case reference: 9R65-0BP0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2014

SBGA113

SBGA113

Case reference: 9R65-0BT0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2015

SBGA115

SBGA115

Case reference: 9R65-0BS0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2014

SBGA117

SBGA117

Case reference: 9R65-0BR0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2014

SBGA119

SBGA119

Case reference: 9R65-0BR0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2014

SBGA121

SBGA121

Case reference: 9R65-0BV0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2014

SBGA123

SBGA123

Case reference: 9R65-0BW0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2014

SBGA125

SBGA125

Case reference: 9R65-0BY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA127

SBGA127

Case reference: 9R65-0BY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA129

SBGA129

Case reference: 9R65-0BX0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2015

SBGA131

SBGA131

Case reference: 9R65-0CA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA133

SBGA133

Case reference: 9R65-0CA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA135

SBGA135

Case reference: 9R65-0CB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2015

SBGA137

SBGA137

Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA139

SBGA139

Case reference: 9R65-0CC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015

SBGA141

SBGA141

Case reference: 9R65-0CD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA143

SBGA143

Case reference: 9R65-0CF0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA145

SBGA145

Case reference: 9R65-0CE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2016

SBGA147

SBGA147

Case reference: 9R65-0CJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2016

SBGA149

SBGA149

Case reference: 9R65-0CJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2016

SBGA151

SBGA151

Case reference: 9R65-0CG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA153

SBGA153

Case reference: 9R65-0CH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA155

SBGA155

Case reference: 9R65-0CK0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA157

SBGA157

Case reference: 9R65-0CL0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016

SBGA159

SBGA159

Case reference: 9R65-0CM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA201

SBGA201

Case reference: 9R65-0AA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA203

SBGA203

Case reference: 9R65-0AA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA211

SBGA211

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA225

SBGA225

Case reference: 9R65-0AG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA227

SBGA227

Case reference: 9R65-0AG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA229

SBGA229

Case reference: 9R65-0AM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA231

SBGA231

Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA241

SBGA241

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA259

SBGA259

Case reference: 9R65-0AE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA273

SBGA273

Case reference: 9R65-0BD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA275

SBGA275

Case reference: 9R65-0BD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA279

SBGA279

Case reference: 9R65-0BG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA281

SBGA281

Case reference: 9R65-0BG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA283

SBGA283

Case reference: 9R65-0BH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA285

SBGA285

Case reference: 9R65-0BH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA293

SBGA293

Case reference: 9R65-0BJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA299

SBGA299

Case reference: 9R65-0BM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA301

SBGA301

Case reference: 9R65-0BM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA347

SBGA347

Case reference: 9R65-0CJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA349

SBGA349

Case reference: 9R65-0CJ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA361

SBGA361

Case reference: 9R65-0AH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: White Gold
Year: 2018

SBGA362

SBGA362

Case reference: 9R65-0AH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Yellow Gold
Year: 2018

SBGA364

SBGA364

Case reference: 9R65-0AH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Rose Gold
Year: 2018

SBGA365

SBGA365

Case reference: 9R65-0CR0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA367

SBGA367

Case reference: 9R65-0CP0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017

SBGA369

SBGA369

Case reference: 9R65-0CS0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017

SBGA371

SBGA371

Case reference: 9R65-0CN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA373

SBGA373

Case reference: 9R65-0CV0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA375

SBGA375

Case reference: 9R65-0CV0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA377

SBGA377

Case reference: 9R65-0CT0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA379

SBGA379

Case reference: 9R65-0CW0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA381

SBGA381

Case reference: 9R65-0CB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA383

SBGA383

Case reference: 9R65-0CX0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA387

SBGA387

Case reference: 9R65-0CZ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA389

SBGA389

Case reference: 9R65-0CS0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2018

SBGA391

SBGA391

Case reference: 9R65-0DC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA393

SBGA393

Case reference: 9R65-0DB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA395

SBGA395

Case reference: 9R65-0CY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA397

SBGA397

Case reference: 9R65-0DA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2018

SBGA399

SBGA399

Case reference: 9R65-0DE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2019

SBGA401

SBGA401

Case reference: 9R65-0DH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018

SBGA407

SBGA407

Case reference: 9R65-0AA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2019

SBGA409

SBGA409

Case reference: 9R65-0DD0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2019

SBGA413

SBGA413

Case reference: 9R65-0DG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2019

SBGA415

SBGA415

Case reference: 9R65-0DG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2019

SBGA417

SBGA417

Case reference: 9R65-0DM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2019

SBGA419

SBGA419

Case reference: 9R65-0DK0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2019

SBGA421

SBGA421

Case reference: 9R65-0DL0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2020

SBGA423

SBGA423

Case reference: 9R65-0DN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA425

SBGA425

Case reference: 9R65-0DH0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA427

SBGA427

Case reference: 9R65-0DP0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA429

SBGA429

Case reference: 9R65-0DP0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA431

SBGA431

Case reference: 9R65-0DT0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA432

SBGA432

Case reference: 9R65-0DW0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2020

SBGA433

SBGA433

Case reference: 9R65-0DR0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA435

SBGA435

Case reference: 9R65-0DS0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2020

SBGA437

SBGA437

Case reference: 9R65-0DY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA439

SBGA439

Case reference: 9R65-0DY0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA441

SBGA441

Case reference: 9R65-0DX0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA443

SBGA443

Case reference: 9R65-0DG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2021

SBGA445

SBGA445

Case reference: 9R65-0DG0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2021

SBGA447

SBGA447

Case reference: 9R65-0EB0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA451

SBGA451

Case reference: 9R65-0DZ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA453

SBGA453

Case reference: 9R65-0DZ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA455

SBGA455

Case reference: 9R65-0DZ0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA457

SBGA457

Case reference: 9R65-0EA0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2021

SBGA459

SBGA459

Case reference: 9R65-0EC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA465

SBGA465

Case reference: 9R65-
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

SBGA467

SBGA467

Case reference: 9R65-
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021

Caliber 9R66

In 2006, the 9R66 was introduced, Grand Seiko’s first Spring Drive movement with a GMT function.

TypeSpring Drive Automatic
Accuracy±1 sec/day (±15 sec/month)
Power reserve72 hours
Jewels30 jewels
ComplicationsDate, power reserve indicator, GMT Dual Time
InstructionsInstructions 9R66

All Grand Seiko 9R66 watches

SBGE001

SBGE001

Case reference: 9R66-0AA0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2006

SBGE003

SBGE003

Case reference: 9R66-0AB0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2009

SBGE005

SBGE005

Case reference: 9R66-0AC0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2007

SBGE007

SBGE007

Case reference: 9R66-0AD0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2008

SBGE009

SBGE009

Case reference: 9R66-0AE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2009

SBGE011

SBGE011

Case reference: 9R66-0AA0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2009

SBGE013

SBGE013

Case reference: 9R66-0AE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2009

SBGE015

SBGE015

Case reference: 9R66-0AF0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Titanium
Year: 2011

SBGE017

SBGE017

Case reference: 9R66-0AE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Titanium
Year: 2011

SBGE019

SBGE019

Case reference: 9R66-0AH0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Titanium
Year: 2011

SBGE021

SBGE021

Case reference: 9R66-0AJ0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2012

SBGE023

SBGE023

Case reference: 9R66-0AK0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2012

SBGE025

SBGE025

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2013

SBGE027

SBGE027

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2013

SBGE029

SBGE029

Case reference: 9R66-0AM0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2015

SBGE031

SBGE031

Case reference: 9R66-0AN0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2015

SBGE033

SBGE033

Case reference: 9R66-0AP0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2015

SBGE035

SBGE035

Case reference: 9R66-0AR0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2015

SBGE201

SBGE201

Case reference: 9R66-0AA0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2017

SBGE205

SBGE205

Case reference: 9R66-0AC0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2017

SBGE209

SBGE209

Case reference: 9R66-0AE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2017

SBGE211

SBGE211

Case reference: 9R66-0AC0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2017

SBGE213

SBGE213

Case reference: 9R66-0AE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2017

SBGE215

SBGE215

Case reference: 9R66-0AF0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Titanium
Year: 2018

SBGE225

SBGE225

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2018

SBGE227

SBGE227

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2018

SBGE243

SBGE243

Case reference: 9R66-0AV0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Ceramic/Ti
Year: 2018

SBGE245

SBGE245

Case reference: 9R66-0AS0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2018

SBGE247

SBGE247

Case reference: 9R66-0AT0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Ceramic/Ti
Year: 2018

SBGE248

SBGE248

Case reference: 9R66-0AW0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2019

SBGE249

SBGE249

Case reference: 9R66-0AX0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2019

SBGE251

SBGE251

Case reference: 9R66-0AY0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2019

SBGE253

SBGE253

Case reference: 9R66-0BB0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE255

SBGE255

Case reference: 9R66-0BB0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE257

SBGE257

Case reference: 9R66-0BB0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE259

SBGE259

Case reference: 9R66-0AZ0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Titanium
Year: 2020

SBGE261

SBGE261

Case reference: 9R66-0AB0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE262

SBGE262

Case reference: 9R66-0BC0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE263

SBGE263

Case reference: 9R66-0BG0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2021

SBGE265

SBGE265

Case reference: 9R66-0BF0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE267

SBGE267

Case reference: 9R66-0BE0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2020

SBGE269

SBGE269

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2021

SBGE271

SBGE271

Case reference: 9R66-0AL0
Type: Spring Drive Automatic
Movement: 9R66
Case material: Stainless Steel
Year: 2021

Caliber 9R86

Gran Seiko’s first Spring Drive chronograph saw the light of day in 2007, with the 9R86 movement, and immediately ranks as the most accurate spring-powered chronograph in the world.

The 72-hour power reserve is maintained even with the chronograph running.

TypeSpring Drive Automatic
Accuracy±1 sec/day (±15 sec/month)
Power reserve72 hours
Jewels50 jewels
ComplicationsDate, power reserve indicator, GMT Dual Time, chronograph, quick correction function of time difference adjusting to a calendar
InstructionsInstructions 9R86

All Grand Seiko 9R86 watches

SBGC001

SBGC001

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2007

SBGC003

SBGC003

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2007

SBGC004

SBGC004

Case reference: 9R86-0AB0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Rose Gold
Year: 2007

SBGC005

SBGC005

Case reference: 9R86-0AC0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Titanium
Year: 2008

SBGC007

SBGC007

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2008

SBGC009

SBGC009

Case reference: 9R86-0AD0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2011

SBGC010

SBGC010

Case reference: 9R86-0AD0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2013

SBGC011

SBGC011

Case reference: 9R86-0AF0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2014

SBGC201

SBGC201

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2017

SBGC203

SBGC203

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2017

SBGC204

SBGC204

Case reference: 9R86-0AB0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Rose Gold
Year: 2017

SBGC205

SBGC205

Case reference: 9R86-0AC0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Titanium
Year: 2017

SBGC207

SBGC207

Case reference: 9R86-0AA0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2017

SBGC221

SBGC221

Case reference: 9R86-0AG0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Ceramic/Ti
Year: 2017

SBGC223

SBGC223

Case reference: 9R86-0AG0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Ceramic/Ti
Year: 2017

SBGC225

SBGC225

Case reference: 9R86-0AH0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2017

SBGC227

SBGC227

Case reference: 9R86-0AJ0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Ceramic/Ti
Year: 2018

SBGC235

SBGC235

Case reference: 9R86-0AK0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Ceramic/Ti
Year: 2019

SBGC240

SBGC240

Case reference: 9R86-0AM0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2021

SBGC242

SBGC242

Case reference: 9R86-0AL0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2021

SBGC244

SBGC244

Case reference: 9R86-0AL0
Type: Spring Drive Automatic
Movement: 9R86
Case material: Stainless Steel
Year: 2021

Caliber 9R15

Caliber 9R15 is an even more accurate version of the 9R65. The highest level of precision is achieved by selecting with extreme accuracy the quartz oscillators that offer the best performance ever.

On the oscillator there is an 18-karat gold medallion on which the Grand Seiko lion is depicted, which in addition to embellishing the movement represents its high accuracy.

9r15
TypeSpring Drive Automatic
Accuracy±0.5 sec/day (±10 sec/month)
Power reserve72 hours
Jewels30 jewels
ComplicationsDate, power reserve indicator
InstructionsInstructions 9R15

All Grand Seiko 9R15 watches

SBGA055

SBGA055

Case reference: 9R15-0AA0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Stainless Steel
Year: 2010

SBGA089

SBGA089

Case reference: 9R15-0AC0
Type: Spring Drive Automatic
Movement: 9R15
Case material: White Gold
Year: 2013

SBGA090

SBGA090

Case reference: 9R15-0AC0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Yellow Gold
Year: 2013

SBGA092

SBGA092

Case reference: 9R15-0AC0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Rose Gold
Year: 2013

SBGA103

SBGA103

Case reference: 9R15-0AD0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Stainless Steel
Year: 2014

SBGA105

SBGA105

Case reference: 9R15-0AE0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Stainless Steel
Year: 2014

SBGA107

SBGA107

Case reference: 9R15-0AF0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Platinum
Year: 2014

SBGA109

SBGA109

Case reference: 9R15-0AG0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2014

SBGA289

SBGA289

Case reference: 9R15-0AC0
Type: Spring Drive Automatic
Movement: 9R15
Case material: White Gold
Year: 2017

SBGA290

SBGA290

Case reference: 9R15-0AC0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Yellow Gold
Year: 2017

SBGA384

SBGA384

Case reference: 9R15-0AJ0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Rose Gold
Year: 2018

SBGA385

SBGA385

Case reference: 9R15-0AK0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2018

SBGA403

SBGA403

Case reference: 9R15-0AL0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2019

SBGA405

SBGA405

Case reference: 9R15-0AM0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2019

SBGA411

SBGA411

Case reference: 9R15-0AN0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2019

SBGA449

SBGA449

Case reference: 9R15-0AP0
Type: Spring Drive Automatic
Movement: 9R15
Case material: Titanium
Year: 2021

Caliber 9R84

TypeSpring Drive Automatic
Accuracy±1 sec/day (±15 sec/month)
Power reserve72 hours
Jewels41 jewels
ComplicationsDate, power reserve indicator, chronograph
InstructionsInstructions 9R84

All Grand Seiko 9R84 watches

SBGB001

SBGB001

Case reference: 9R84-0AA0
Type: Spring Drive Automatic
Movement: 9R84
Case material: Stainless Steel
Year: 2013

SBGB003

SBGB003

Case reference: 9R84-0AA0
Type: Spring Drive Automatic
Movement: 9R84
Case material: Stainless Steel
Year: 2013

Caliber 9R96

9r96
TypeSpring Drive Automatic
Accuracy±0.5 sec/day (±10 sec/month)
Power reserve72 hours
Jewels50 jewels
ComplicationsDate, power reserve indicator, GMT Dual Time, chronograph
InstructionsInstructions 9R96

All Grand Seiko 9R96 watches

SBGC013

SBGC013

Case reference: 9R96-0AA0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Titanium
Year: 2015

SBGC015

SBGC015

Case reference: 9R96-0AC0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Ceramic/Ti
Year: 2016

SBGC017

SBGC017

Case reference: 9R96-0AC0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Ceramic/Ti
Year: 2016

SBGC219

SBGC219

Case reference: 9R96-0AD0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Ceramic/Ti
Year: 2017

SBGC229

SBGC229

Case reference: 9R96-0AF0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Ceramic/Ti
Year: 2019

SBGC230

SBGC230

Case reference: 9R96-0AH0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Rose Gold
Year: 2019

SBGC231

SBGC231

Case reference: 9R96-0AG0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Titanium
Year: 2019

SBGC233

SBGC233

Case reference: 9R96-0AJ0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Titanium
Year: 2019

SBGC237

SBGC237

Case reference: 9R96-0AL0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Stainless Steel
Year: 2020

SBGC238

SBGC238

Case reference: 9R96-0AM0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Rose Gold
Year: 2020

SBGC245

SBGC245

Case reference: 9R96-0AN0
Type: Spring Drive Automatic
Movement: 9R96
Case material: Titanium
Year: 2021

Caliber 9R16

TypeSpring Drive Automatic
Accuracy±0,5 sec/day (±10 sec/month)
Power reserve72 hours
Jewels30 jewels
ComplicationsDate, power reserve indicator, GMT Dual Time
InstructionsInstructions 9R16

All Grand Seiko 9R16 watches

SBGE037

SBGE037

Case reference: 9R16-0AA0
Type: Spring Drive Automatic
Movement: 9R16
Case material: Ceramic/Ti
Year: 2016

SBGE039

SBGE039

Case reference: 9R16-0AB0
Type: Spring Drive Automatic
Movement: 9R16
Case material: Ceramic/Ti
Year: 2016

SBGE241

SBGE241

Case reference: 9R16-0AA0
Type: Spring Drive Automatic
Movement: 9R16
Case material: Stainless Steel
Year: 2017

Caliber 9R01

9R01
TypeSpring Drive Manual
Accuracy±0.5 sec/day (±10 sec/month)
Power reserve192 hours
Jewels56 jewels
ComplicationsPower reserve indicator (back)
InstructionsInstructions 9R01

All Grand Seiko 9R01 watches

SBGD001

SBGD001

Case reference: 9R01-0AA0
Type: Spring Drive Manual
Movement: 9R01
Case material: Platinum
Year: 2016

SBGD201

SBGD201

Case reference: 9R01-0DJ0
Type: Spring Drive Manual
Movement: 9R01
Case material: Platinum
Year: 2017

SBGD202

SBGD202

Case reference: 9R01-0AA0
Type: Spring Drive Manual
Movement: 9R01
Case material: Rose Gold
Year: 2017

SBGD204

SBGD204

Case reference: 9R01-0AB0
Type: Spring Drive Manual
Movement: 9R01
Case material: Rose Gold
Year: 2019

SBGD205

SBGD205

Case reference: 9R01-0AC0
Type: Spring Drive Manual
Movement: 9R01
Case material: Platinum
Year: 2020

SBGD207

SBGD207

Case reference: 9R01-0AD0
Type: Spring Drive Manual
Movement: 9R01
Case material: Platinum
Year: 2021

Caliber 9R02

9R02
TypeSpring Drive Manual
Accuracy±1 sec/day (±15 sec/month)
Power reserve84 hours
Jewels39 jewels
ComplicationsPower reserve indicator (back)
InstructionsInstructions 9R02

All Grand Seiko 9R02 watches

SBGZ001

SBGZ001

Case reference: 9R02-0AB0
Type: Spring Drive Manual
Movement: 9R02
Case material: Platinum
Year: 2019

SBGZ003

SBGZ003

Case reference: 9R02-0AA0
Type: Spring Drive Manual
Movement: 9R02
Case material: Platinum
Year: 2019

SBGZ005

SBGZ005

Case reference: 9R02-0A00
Type: Spring Drive Manual
Movement: 9R02
Case material: Platinum
Year: 2021

SBGZ007

SBGZ007

Case reference: 9R02-0AD0
Type: Spring Drive Manual
Movement: 9R02
Case material: Platinum
Year: 2021

Caliber 9R31

9R31
TypeSpring Drive Manual
Accuracy±1 sec/day (±15 sec/month)
Power reserve72 hours
Jewels30 jewels
ComplicationsIndicatore riserva di carica (back)
InstructionsInstructions 9R31

All Grand Seiko 9R31 watches

SBGY002

SBGY002

Case reference: 9R31-0AA0
Type: Spring Drive Manual
Movement: 9R31
Case material: Yellow Gold
Year: 2019

SBGY003

SBGY003

Case reference: 9R31-0AB0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2019

SBGY005

SBGY005

Case reference: 9R31-0AC0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2020

SBGY007

SBGY007

Case reference: 9R31-0AD0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2021

SBGY008

SBGY008

Case reference: 9R31-0AE0
Type: Spring Drive Manual
Movement: 9R31
Case material: Rose Gold
Year: 2021

Caliber 9RA5

The new-generation caliber 9RA5, introduced in 2020, is the first Spring Drive movement with a sensor to compensate for temperature-induced variations to the vibrations of the quartz crystal.

To prevent the effects of environmental factors such as humidity, light and static electricity, the oscillator and sensor are isolated inside a vacuum-filled capsule.

9RA5
TypeSpring Drive Automatic
Accuracy±0.5 sec/day (±10 sec/month)
Power reserve120 hours
Jewels38 jewels
ComplicationsDate, power reserve indicator

All Grand Seiko 9RA5 watches

SLGA001

SLGA001

Case reference: 9RA5-0AA0
Type: Spring Drive Automatic
Movement: 9RA5
Case material: Titanium
Year: 2020

SLGA003

SLGA003

Case reference: 9RA5-0AB0
Type: Spring Drive Automatic
Movement: 9RA5
Case material: Titanium
Year: 2020

Caliber 9RA2

Part of the same family as the 9RA5, the 9RA2 introduced in 2021 differs for the power reserve indicator positioned on the back.

9RA2
TypeSpring Drive Automatic
Accuracy±0.5 sec/day (±10 sec/month)
Power reserve120 hours
Jewels38 jewels
ComplicationsDate, power reserve indicator (back)

All Grand Seiko 9RA2 watches

SLGA007

SLGA007

Case reference: 9RA2-0AA0
Type: Spring Drive Automatic
Movement: 9RA2
Case material: Stainless Steel
Year: 2021

SLGA008

SLGA008

Case reference: 9RA2-0AC0
Type: Spring Drive Automatic
Movement: 9RA2
Case material: Rose Gold
Year: 2021