Seiko model family
Seiko 5 Sports GMT
Our base has 5 Seiko 5 Sports GMT references (SBSC003, SSK001, SSK003, SSK005 and SSK059): cases of 39.4–42.5 mm, 46–47.9 mm lug to lug, and 13.6 mm thick. They run on the Seiko 4R34 movement, take 20 mm or 22 mm straps (by reference), are water resistant to 100 m, and have a Hardlex crystal. Not every reference has every figure sourced yet; the table shows which are missing.
Seiko 5 Sports GMT references compared
Each figure carries the number of its source; open a reference for every size, the drawing and the full list of sources.
| Reference | Case | Lug to lug | Thickness | Lug width | Movement | Water resistance |
|---|---|---|---|---|---|---|
| SBSC003 | 42.5 mm[1] | — | 13.6 mm[1] | — | Seiko 4R34[1] | 10 bar (100 m)[1] |
| SSK001 | 42.5 mm[2] | 46 mm[2] | 13.6 mm[2] | 22 mm[2] | Seiko 4R34[2] | 10 bar (100 m)[2] |
| SSK003 | 42.5 mm[3] | 46 mm[3] | 13.6 mm[3] | 22 mm[3] | Seiko 4R34[3] | 10 bar (100 m)[3] |
| SSK005 | 42.5 mm[4] | 46 mm[4] | 13.6 mm[4] | 22 mm[4] | Seiko 4R34[4] | 10 bar (100 m)[4] |
| SSK059 | 39.4 mm[5] | 47.9 mm[5] | 13.6 mm[5] | 20 mm[5] | Seiko 4R34[5] | 10 bar (100 m)[5] |
Why these references are listed · each one is named as part of the family in our data or a cited source
- SBSC003: In our data: collection “5 Sports”, a movement with a 24-hour (GMT) hand.
- SSK001: In our data: collection “5 Sports”, a movement with a 24-hour (GMT) hand.
- SSK003: In our data: collection “5 Sports”, a movement with a 24-hour (GMT) hand.
- SSK005: In our data: collection “5 Sports”, a movement with a 24-hour (GMT) hand.
- SSK059: In our data: collection “5 Sports”, a movement with a 24-hour (GMT) hand.
Seiko 5 Sports GMT movement and strap size
- Seiko 4R34 movementIn the SBSC003, SSK001, SSK003, SSK005 and 1 moreautomatic
- 20 mm lug width watchesStrap size of the SSK059
- 22 mm lug width watchesStrap size of the SSK001, SSK003 and SSK005
- Watch strap size toolStrap length from the wrist and the lug-to-lug distance
Related families
Seiko 5 Sports GMT questions
What movement is in the Seiko 5 Sports GMT?
All 5 references use the Seiko 4R34 (automatic).
What size is the Seiko 5 Sports GMT?
Across the references the case is 39.4–42.5 mm across, 46–47.9 mm lug to lug and 13.6 mm thick. The table above has each reference's own sizes.
What strap size does the Seiko 5 Sports GMT take?
How water resistant is the Seiko 5 Sports GMT?
All 5 references are rated 100 m.
What crystal does the Seiko 5 Sports GMT have?
All 5 references have a Hardlex crystal.
Which references are in the Seiko 5 Sports GMT family?
SBSC003, SSK001, SSK003, SSK005 and SSK059. A reference is listed only when its own data or a cited source names it as part of the family; the list under the table shows what names each one.
Sources
Documents checked · Report a wrong number
- 1Seiko Watch Corporation — SBSC003 product page (5 Sports), seikowatches.com jp-ja · html · read
- 2Seiko Watch Corporation — SSK001 product page (us-en), seikowatches.com · html · read
- 3Seiko Watch Corporation — SSK003 product page (us-en), seikowatches.com · html · read
- 4Seiko Watch Corporation — SSK005 product page (5 Sports), seikowatches.com US · html · read
- 5Seiko Watch Corporation — SSK059 product page (5 Sports), seikowatches.com us-en · html · read