Auto GMT comparison
Seiko 5 Sports GMT (SKX case) vs Seiko 5 Sports Field GMT SSK025
Verdict. Today the Seiko 5 Sports Field GMT SSK025 (SSK025) is the better value by our formula: Value Score 100 vs 96, with 64 spec points at $435.00. The other watch costs $60.00 more. Prices as of November 3, 2026, 18:15 UTC.
Side by side
Seiko 5 Sports GMT (SKX case) vs Seiko 5 Sports Field GMT SSK025: specs and price
| Spec |  Seiko 5 Sports GMT (SKX case) SSK035 · priced variant of 2 |  Seiko 5 Sports Field GMT SSK025 SSK025 |
|---|---|---|
| Price on Amazon today | $495.00 | $435.00 |
| Value Score (within type) | 96 | 100 |
| Spec points | 67 | 64 |
| Spec points per $100 | 13.5 | 14.7 |
| Movement | Automatic (4R34) | Automatic (4R34) |
| Power reserve | 41 h | 41 h |
| Crystal | Hardlex | Hardlex |
| Water resistance | 100 m | 100 m |
| Screw-down crown | No | No |
| Case diameter | 42.5 mm | 39.4 mm |
| Lug-to-lug | 46.5 mm | — |
| Thickness | 13.6 mm | — |
| Lug width | 22 mm | 20 mm |
| Fits wrist from | ≥ 16.7 cm (6.6″) | — |
| Strap / bracelet | Steel | Nylon |
| Made in | — | — |
| Amazon sales rank | #1,675 | #2,542 |
FAQ
Questions about the Seiko 5 Sports GMT (SKX case) and the Seiko 5 Sports Field GMT SSK025
Which is cheaper on Amazon today?
As of November 3, 2026, 18:15 UTC, the Seiko 5 Sports GMT (SKX case) (SSK035) is $495.00 and the Seiko 5 Sports Field GMT SSK025 (SSK025) is $435.00; the difference is $60.00. Amazon's price at checkout applies.
Context
Where both sit among automatic GMT watches
| # | Watch | Movement | Crystal | Water res. | Case diameter × lug-to-lug | Fits wrist | Spec pts | Price | Value Score | Buy |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | Automatic (4R34) | Hardlex | 100 m | 39.4 mm | — | 64 | $435.00third-party | 100 | Amazon |
| 2 | | Automatic (4R34) | Hardlex | 100 m | 42.5 × 46.5 mm | ≥ 16.7 cm (6.6″) | 67 | $495.00third-party | 96 | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. third-party = sold by a marketplace seller, not Amazon (warranty may differ); ships later = not in stock today, never crowned best value.