The Seiko SKX line is a series of watches housing the 7S26 self-winding mechanical movement, which includes several entry-level diver’s. The first models were introduced in 1996, and among these stand out the SKX007 and SKX009, arguably 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, known as the Seiko Monster.
SKX diver’s 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 (stainless steel bracelet)
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 (stainless steel bracelet)
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 (stainless steel bracelet)
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 (stainless steel bracelet)
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
37mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.
SKX023
Ref: SKX023 (7S26-0050)
Caliber: 7S26
37mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.
SKX025
Ref: SKX025 (7S26-0050)
Caliber: 7S26
37mm stainless steel case, Hardlex crystal, screw-down crown, 21 jewels, 41 hour power reserve, 21,600 bph.
SKX027
Ref: SKX027 (7S26-0050)
Caliber: 7S26
37mm stainless steel case, 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
| Nickname | Ref. | Other Ref. | MC Ref. | Caliber | Limited |
|---|---|---|---|---|---|
| SKX001 | SKX001 | 7S26-0010 | 7S26 | No | |
| SKX003 | SKX003 | 7S26-0010 | 7S26 | No | |
| SKX005 | SKX005 | 7S26-0010 | 7S26 | No | |
| SKX006 | SKX006 | 7S26-0010 | 7S26 | No | |
| SKX007 | SKX007 | 7S26-0020 | 7S26 | No | |
| SKX009 | SKX009 | 7S26-0020 | 7S26 | No | |
| SKX011 | SKX011 | 7S26-0020 | 7S26 | No | |
| SKX013 | SKX013 | 7S26-0030 | 7S26 | No | |
| SKX015 | SKX015 | 7S26-0030 | 7S26 | No | |
| SKX017 | SKX017 | 7S26-0030 | 7S26 | No | |
| SKX021 | SKX021 | 7S26-0050 | 7S26 | No | |
| SKX023 | SKX023 | 7S26-0050 | 7S26 | No | |
| SKX025 | SKX025 | 7S26-0050 | 7S26 | No | |
| SKX027 | SKX027 | 7S26-0050 | 7S26 | No | |
| SKX Submariner | SKX031 | 7S26-0040 | 7S26 | No | |
| SKX Submariner Pepsi | SKX033 | 7S26-0040 | 7S26 | No | |
| SKX169 | SKX169 | 7S26-7020 | 7S26 | No | |
| SKX171 | SKX171 | 7S26-7020 | 7S26 | No | |
| SKX173 | SKX173 | 7S26-0029 | 7S26 | No | |
| SKX175 | SKX175 | 7S26-0029 | 7S26 | No | |
| SKX399 | SKX399 | 7S26-0020 | 7S26 | No | |
| SKX401 | SKX401 | 7S26-0020 | 7S26 | No | |
| SKX403 | SKX403 | 7S26-0160 | 7S26 | No | |
| SKX405 | SKX405 | 7S26-0160 | 7S26 | No | |
| SKX407 | SKX407 | 7S26-0170 | 7S26 | No | |
| SKX409 | SKX409 | 7S26-0170 | 7S26 | No | |
| SKX411 | SKX411 | 7S26-0170 | 7S26 | No | |
| SKX413 | SKX413 | 7S26-0170 | 7S26 | No | |
| SKX415 | SKX415 | 7S26-0180 | 7S26 | No | |
| SKX417 | SKX417 | 7S26-0180 | 7S26 | No | |
| SKX419 | SKX419 | 7S26-0180 | 7S26 | No | |
| SKX421 | SKX421 | 7S26-0150 | 7S26 | No | |
| SKX423 | SKX423 | 7S26-0150 | 7S26 | No | |
| Black Monster | SKX779 | 7S26-0350 | 7S26 | No | |
| Orange Monster | SKX781 | 7S26-0350 | 7S26 | No | |
| SKXA33 | SKXA33 | 7S26-01C0 | 7S26 | No | |
| SKXA35 | SKXA35 | 7S26-0028 | 7S26 | No | |
| Black Monster (USA) | SKXA43 | 7S26-0351 | 7S26 | No | |
| Orange Monster USA | SKXA45 | SKXA37 | 7S26-0351 | 7S26 | No |
| White Knight | SKXA47 | 7S26-01X0 | 7S26 | No | |
| Black Knight | SKXA49 | 7S26-01X0 | 7S26 | No | |
| Orange Knight | SKXA51 | SKXA61 | 7S26-01X0 | 7S26 | No |
| Black Bullet | SKXA53 | 7S26-02K0 | 7S26 | No | |
| Orange Bullet | SKXA55 | 7S26-02K0 | 7S26 | No | |
| SKXA63 | SKXA63 | 7S26-7020 | 7S26 | No | |
| SKXA65 | SKXA65 | 7S26-04N0 | 7S26 | Yes (2999) |
Movements
Caliber 7S26
| Type | Automatic |
| Power reserve | 41 hours |
| Bph | 21,600 |
| Jewels | 21 |
| Lift Angle | 53° |
| Manual wind | No |
| Hacking | No |