Hamilton Khaki Field Automatic vs Seiko Prospex Sea Solar SNE597
Hamilton's field watch meets Seiko's diver
Quick Verdict
The Hamilton Khaki Field Automatic ($500–$1,000) and Seiko Prospex Sea Solar SNE597 ($500–$1,000) are closely matched timepieces at similar price points. The Khaki Field Automatic emphasizes Automatic (ETA C07.611 base) engineering while the Prospex Sea Solar SNE597 focuses on Seiko (Japan) craftsmanship.
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Specifications Compared
| Feature | Hamilton Khaki Field Automatic | Seiko Prospex Sea Solar SNE597 |
|---|---|---|
| Price | $500–$1,000 | $500–$1,000 |
| Case Size | 38mm | 41.0mm (48.8mm lug-to-lug, 11.3mm thick) |
| Movement | Automatic H-10 | Solar Quartz |
| Caliber Type | Automatic (ETA C07.611 base) | Seiko Solar Quartz |
| Power Reserve | 80 Hours | — |
| Water Resistance | 100m (10 ATM) | 200m Diver |
| Crystal | Sapphire Crystal | Sapphire |
| Case Material | Stainless Steel | — |
| Origin | Swiss Made | Seiko (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Hamilton's design language vs Seiko's approach
The Hamilton Khaki Field Automatic features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Seiko Prospex Sea Solar SNE597 offers steel construction at 41.0mm (48.8mm lug-to-lug, 11.3mm thick) with Sapphire. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic H-10 vs Solar Quartz
The Khaki Field Automatic runs the Automatic H-10 (Automatic (ETA C07.611 base), 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Prospex Sea Solar SNE597 uses the Solar Quartz (Seiko Solar Quartz, standard reserve) at standard. The Khaki Field Automatic edges ahead on power reserve.
Wearability & Fit
38mm vs 41.0mm (48.8mm lug-to-lug, 11.3mm thick) — different wrist presence
At 38mm, the Khaki Field Automatic wears more compactly on smaller wrists compared to the Prospex Sea Solar SNE597 at 41.0mm (48.8mm lug-to-lug, 11.3mm thick). Water resistance differs: 100m (10 ATM) vs 200m Diver.
Value & Cost of Ownership
Same tier — different value propositions
The Hamilton Khaki Field Automatic sits at $500–$1,000 and the Seiko Prospex Sea Solar SNE597 at $500–$1,000. On the specs that outlast any price: the Khaki Field Automatic uses Sapphire Crystal with 80 Hours, against Sapphire and a standard reserve on the Prospex Sea Solar SNE597. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 200m Diver
The Khaki Field Automatic is rated to 100m (10 ATM) while the Prospex Sea Solar SNE597 handles 200m Diver. The Prospex Sea Solar SNE597 offers superior water resistance.
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 $500–$1,000, it delivers Automatic H-10 with 80 Hours power reserve.
Check Price on AmazonSeiko
Prospex Sea Solar SNE597
Choose the Seiko Prospex Sea Solar SNE597 if you value Seiko Solar Quartz technology, Seiko (Japan) heritage, and 41.0mm (48.8mm lug-to-lug, 11.3mm thick) proportions. At $500–$1,000, the Solar Quartz with ample power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Hamilton Khaki Field Automatic and Seiko Prospex Sea Solar SNE597 represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Seiko delivers Seiko (Japan) engineering.
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How This Page Was Made
Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.