Seiko SKX Complete Guide

Seiko SKX

The Seiko SKX watches are entry-level diver’s housing the 7S26 self-winding mechanical movement. The first models were introduced in 1996, and among these stand out the SKX007 and SKX009, the two most popular references in the series.

The sales success of the SKX007 and SKX009 was such that production continued for more than 20 years after their release, making them two of the longest-running models ever.

Among the models later introduced, in the early 2000s, the most notable are the SKX779 and SKX881 which started the long line of watches known as the Seiko Monster.

Most SKXs are 200m diver’s watches, while others provide only 100 meters of water resistance.

SKX series watches

SKX001

Ref: SKX001 (7S26-0010)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX003

Ref: SKX003 (7S26-0010)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX005

Ref: SKX005 (7S26-0010)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX006

Ref: SKX006 (7S26-0010)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX007

Ref: SKX007 (7S26-0020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX007 (versione con bracciale)

Ref: SKX007 (7S26-0020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX009

Ref: SKX009 (7S26-0020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX009 (versione con bracciale)

Ref: SKX009 (7S26-0020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX011

Ref: SKX011 (7S26-0020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX013

Ref: SKX013 (7S26-0030)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX013 (versione con bracciale)

Ref: SKX013K2 (7S26-0030)
Caliber: 7S26
Year: 1996

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX015

Ref: SKX015 (7S26-0030)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX015 (versione con bracciale)

Ref: SKX015 (7S26-0030)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX017

Ref: SKX017 (7S26-0030)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX021

Ref: SKX021 (7S26-0050)
Caliber: 7S26

Cassa in acciaio inossidabile da 37mm, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX023

Ref: SKX023 (7S26-0050)
Caliber: 7S26

Cassa in acciaio inossidabile da 37mm, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX025

Ref: SKX025 (7S26-0050)
Caliber: 7S26

Cassa in acciaio inossidabile da 37mm, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX027

Ref: SKX027 (7S26-0050)
Caliber: 7S26

Cassa in acciaio inossidabile da 37mm, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX031 “Submariner”

Ref: SKX031 (7S26-0040)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX033 “Submariner”

Ref: SKX033 (7S26-0040)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX169

Ref: SKX169 (7S26-7020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX171

Ref: SKX171 (7S26-7020)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX173

Ref: SKX173 (7S26-0029)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX175

Ref: SKX175 (7S26-0029)
Caliber: 7S26
Year: 1996

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX399

Ref: SKX399 (7S26-0020)
Caliber: 7S26
Year: 1998

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX401

Ref: SKX401 (7S26-0020)
Caliber: 7S26
Year: 1998

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX403

Ref: SKX403 (7S26-0160)
Caliber: 7S26
Year: 1999

42mm titanium case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX405

Ref: SKX405 ( 7S26-0160)
Caliber: 7S26
Year: 1998

42mm titanium case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX407

Ref: SKX407 (7S26-0170)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX409

Ref: SKX409 (7S26-0170)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX411

Ref: SKX411 (7S26-0170)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX413

Ref: SKX413 (7S26-0170)
Caliber: 7S26

39mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX415

Ref: SKX415 (7S26-0180)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX417

Ref: SKX417 (7S26-0180)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX419

Ref: SKX419 (7S26-0180)
Caliber: 7S26

38mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX421

Ref: SKX421 (7S26-0150)
Caliber: 7S26
Year: 1999

42mm titanium case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKX423

Ref: SKX423 (7S26-0150)
Caliber: 7S26

42mm titanium case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Black Monster

Ref: SKX779 (7S26-0350)
Caliber: 7S26
Year: 2000

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Orange Monster

Ref: SKX781 (7S26-0350)
Caliber: 7S26
Year: 2000

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKXA33

Ref: SKXA33 (7S26-01C0)
Caliber: 7S26
Year: 2002

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKXA35

Ref: SKXA35 (7S26-0028)
Caliber: 7S26
Year: 2002

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Black Monster USA

Ref: SKXA43 (7S26-0351)
Caliber: 7S26

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Orange Monster USA

Ref: SKXA45 – SKXA37 (7S26-0351)
Caliber: 7S26
Year: 2002

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

White Knight

Ref: SKXA47 (7S26-01X0)
Caliber: 7S26

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Black Knight

Ref: SKXA49 (7S26-01X0)
Caliber: 7S26

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Orange Knight

Ref: SKXA51 – SKXA61 (7S26-01X0)
Caliber: 7S26

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Black Bullet

Ref: SKXA53 (7S26-02K0)
Caliber: 7S26

41mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Orange Bullet

Ref: SKXA55 (7S26-02K0)
Caliber: 7S26

41mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKXA63

Ref: SKXA63 (7S26-7020)
Caliber: 7S26

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

SKXA65

Ref: SKXA65 (7S26-04N0)
Caliber: 7S26
Limited edition of 2999 pieces.

42mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.

Summary of the models

NicknameRef.Other Ref.MC Ref.CaliberLimited
SKX001SKX0017S26-00107S26No
SKX003SKX0037S26-00107S26No
SKX005SKX0057S26-00107S26No
SKX006SKX0067S26-00107S26No
SKX007SKX0077S26-00207S26No
SKX009SKX0097S26-00207S26No
SKX011SKX0117S26-00207S26No
SKX013SKX0137S26-00307S26 No
SKX015SKX0157S26-00307S26No
SKX017SKX0177S26-00307S26No
SKX021SKX0217S26-00507S26No
SKX023SKX0237S26-00507S26No
SKX025SKX0257S26-00507S26No
SKX027SKX0277S26-00507S26No
SKX SubmarinerSKX0317S26-00407S26No
SKX Submariner PepsiSKX0337S26-00407S26No
SKX169SKX1697S26-70207S26No
SKX171SKX1717S26-70207S26No
SKX173SKX1737S26-00297S26No
SKX175SKX1757S26-00297S26No
SKX399SKX3997S26-00207S26No
SKX401SKX4017S26-00207S26No
SKX403SKX4037S26-01607S26No
SKX405SKX4057S26-01607S26No
SKX407 SKX407 7S26-01707S26No
SKX409SKX4097S26-01707S26No
SKX411SKX4117S26-01707S26No
SKX413SKX4137S26-01707S26No
SKX415SKX4157S26-01807S26No
SKX417SKX4177S26-01807S26No
SKX419SKX4197S26-01807S26No
SKX421SKX4217S26-01507S26No
SKX423SKX4237S26-01507S26No
Black MonsterSKX7797S26-03507S26No
Orange MonsterSKX7817S26-03507S26No
SKXA33SKXA337S26-01C07S26No
SKXA35SKXA357S26-00287S26No
Black Monster (USA) SKXA437S26-03517S26No
Orange Monster USASKXA45SKXA377S26-03517S26No
White KnightSKXA477S26-01X07S26No
Black KnightSKXA497S26-01X07S26No
Orange KnightSKXA51SKXA617S26-01X07S26No
Black BulletSKXA537S26-02K07S26No
Orange BulletSKXA557S26-02K07S26No
SKXA63SKXA637S26-70207S26No
SKXA65SKXA657S26-04N0 7S26 Yes (2999)

Movements

Caliber 7S26

Technical sheet

TypeAutomatic
Power reserve41 hours
Bph21,600
Jewels21
Lift Angle53°
Manual windNo
HackingNo