Seiko 5 Sports Field GMT SSK025
The 39.4 mm field-style 5 Sports GMT on a nylon strap: 4R34 automatic GMT, Hardlex crystal, 100 m water resistance, fixed bezel with 24-hour scale.
In stock · sold by It'sAboutTime. Price as of November 3, 2026, 18:15 UTC.
What you get
Published manufacturer specifications. Fields we could not verify are left out rather than guessed.
How the 64 spec points add up
Value Score = 100 × √(spec points per dollar ÷ the best ratio among automatic GMT watches in stock on Amazon today). Full methodology.
Comparisons with the Seiko 5 Sports Field GMT SSK025
Questions about the Seiko 5 Sports Field GMT SSK025
How much does the Seiko 5 Sports Field GMT SSK025 cost on Amazon?
What is the Value Score of the Seiko 5 Sports Field GMT SSK025?
What wrist size fits the Seiko 5 Sports Field GMT SSK025?
20 mm straps that fit the Seiko 5 Sports Field GMT SSK025
The lug width is 20 mm, so any 20 mm strap fits. These are the straps we list for that width; see the lug width chart for every size and the accessories page for winders, boxes and tools. Full picks with buying notes: Best 20 mm watch straps.
| Item | Kind | Lug width | Price | Buy |
|---|---|---|---|---|
 BISONSTRAP hand-stitched leather, quick release, 20 mm Entry-price leather with quick-release pins. | Leather strap | 20 mm | $14.99third-party | Amazon |
 Getalia Tuscany vegetable-tanned leather, 20 mm Full-grain Italian leather; ages with wear. | Leather strap | 20 mm | $24.99third-party | Amazon |
 Archer military-style nylon, 20 mm, black Heavy nylon with brushed hardware. | Nylon / NATO strap | 20 mm | $19.99third-party | Amazon |
 Archer military-style nylon, 20 mm, black/gray Heavy nylon with brushed hardware. | Nylon / NATO strap | 20 mm | $19.99third-party | Amazon |
 StrapHabit FKM rubber, quick release, 20 mm Fluororubber: no smell, no sweat marks; the diver upgrade. | Rubber strap | 20 mm | $38.95third-party | Amazon |
 WOCCI 316L steel bracelet, double-locking clasp, 20 mm Inexpensive solid steel bracelet. | Steel bracelet | 20 mm | $28.99third-party | Amazon |
 EACHE steel mesh bracelet, 20 mm Milanese mesh for dress and field watches. | Steel bracelet | 20 mm | $19.99third-party | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. Accessories have no Value Score; they are listed for fit, not ranked.
Guides that apply to this watch
- Ranked among watches under $500
- What the water-resistance rating actually permits
- Sapphire vs Hardlex vs mineral: what the crystal changes
- Lug width and strap sizing
- Automatic vs solar vs quartz: accuracy and running cost
- Watch gift guide by budget and recipient
- Buying a watch on Amazon: sellers, warranty, returns