Grand Seiko 62GS complete guide

Grand Seiko 62GS

Launched under the name of Chronometer Seikomatic, it was promoted to Grand Seiko following the introduction of the Grand Seiko Standard, which exceeded Swiss chronometric standards.

The first automatic Grand Seiko

The 62GS was the first Grand Seiko available with automatic winding. There are two versions of the caliber: 6245A with date, and 6246A with day and date.

62GS Calendar

Ref. 6245-9000 (Stainless Steel)

Movement: 6245
Type: automatic
Jewels: 35
Bph: 19.800
Case: stainless steel

Same movement-case reference as Chronometer Seikomatic.

Ref. 6245-9000 (Gold Cap)

Movement: 6245
Type: automatic
Jewels: 35
Bph: 19.800
Case: gold cap

Same movement-case reference as Chronometer Seikomatic.

Ref. 6245-9001 (Stainless Steel)

Movement: 6245
Type: automatic
Jewels: 35
Bph: 19.800
Case: stainless steel

Ref. 6245-9001 (Gold Cap)

Movement: 6245
Type: automatic
Jewels: 35
Bph: 19.800
Case: gold cap

62GS Week-Dater

Ref. 6246-9000 (Stainless Steel)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: stainless steel

Same movement-case reference as Chronometer Seikomatic.

Ref. 6246-9000 (Gold Cap)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: gold cap

Same movement-case reference as Chronometer Seikomatic.

Ref. 6246-9001 (Stainless Steel)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: stainless steel

Ref. 6246-9001 (Gold Cap)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: gold cap

Transitional dial

Ref. 6246-9001 (Stainless Steel)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: stainless steel

Dial 9010T AD (later examples)

Ref. 6246-9001 (Gold Cap)

Movement: 6246
Type: automatic
Jewels: 39
Bph: 19.800
Case: gold cap

Dial 9010T AD (later examples)

62GS Movements

6246
Grand Seiko 6246A automatic movement

Caliber 6245A

Technical sheet

TypeAutomatic
ComplicationsDate
Bph19,800
Jewels35
Manual windNo
HackingYes

Caliber 6246A

Technical sheet

TypeAutomatic
ComplicationsDay/Date
Bph19,800
Jewels39
Manual windNo
HackingYes