Hamilton Khaki Field Automatic vs Seiko Presage SSA425 Open Heart
Hamilton's field watch meets Seiko's timepiece
Quick Verdict
The Seiko Presage SSA425 Open Heart (~$460) delivers Seiko In-House Automatic technology at $335 less than the Hamilton Khaki Field Automatic (~$795). The Khaki Field Automatic justifies its premium with Swiss Made heritage and Automatic H-10. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Hamilton Khaki Field Automatic | Seiko Presage SSA425 Open Heart |
|---|---|---|
| Price | ~$795 | ~$460 |
| Case Size | 38mm | 40.5mm |
| Movement | Automatic H-10 | Automatic Caliber 4R38 |
| Caliber Type | Automatic (ETA C07.611 base) | Seiko In-House Automatic |
| Power Reserve | 80 Hours | 41 Hours |
| Water Resistance | 100m (10 ATM) | 50m (5 ATM) |
| Crystal | Sapphire Crystal | Hardlex Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Hamilton's design language vs Seiko's approach
Movement & Performance
Automatic H-10 vs Automatic Caliber 4R38
Wearability & Fit
38mm vs 40.5mm — different wrist presence
Value & Cost of Ownership
Seiko is $335 more affordable
Water Resistance
100m (10 ATM) vs 50m (5 ATM)
Our Verdict
Hamilton
Khaki Field Automatic
Choose the Hamilton Khaki Field Automatic if you prioritize Automatic (ETA C07.611 base) engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At ~$795, it delivers Automatic H-10 with 80 Hours power reserve.
Check Price on AmazonSeiko
Presage SSA425 Open Heart
Choose the Seiko Presage SSA425 Open Heart if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At ~$460, the Automatic Caliber 4R38 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Hamilton Khaki Field Automatic and Seiko Presage SSA425 Open Heart represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.
Frequently Asked Questions
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