Hamilton Khaki Field Mechanical 38mm vs Orient Kamasu Automatic Diver
Hamilton's field watch meets Orient's diver
Quick Verdict
The Orient Kamasu Automatic Diver ($250–$500) delivers Orient In-House Automatic technology in the tier below the Hamilton Khaki Field Mechanical 38mm ($500–$1,000). The Kamasu Automatic Diver measures 41.8mm and is rated 200m (20 ATM). The Khaki Field Mechanical 38mm justifies its premium with Swiss Made heritage and Hand-Wound H-50 (ETA 2801-2 base). Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Hamilton Khaki Field Mechanical 38mm | Orient Kamasu Automatic Diver |
|---|---|---|
| Price | $500–$1,000 | $250–$500 |
| Case Size | 38mm | 41.8mm |
| Movement | Hand-Wound H-50 (ETA 2801-2 base) | Automatic Caliber F6922 |
| Caliber Type | Hamilton/ETA Hand-Wound | Orient In-House Automatic |
| Power Reserve | 80 Hours | 40 Hours |
| Water Resistance | 50m (5 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Hamilton's design language vs Orient's approach
The Hamilton Khaki Field Mechanical 38mm features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Orient Kamasu Automatic Diver offers Stainless Steel construction at 41.8mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Hand-Wound H-50 (ETA 2801-2 base) vs Automatic Caliber F6922
The Khaki Field Mechanical 38mm runs the Hand-Wound H-50 (ETA 2801-2 base) (Hamilton/ETA Hand-Wound, 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Kamasu Automatic Diver uses the Automatic Caliber F6922 (Orient In-House Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Khaki Field Mechanical 38mm edges ahead on power reserve.
Wearability & Fit
38mm vs 41.8mm — different wrist presence
At 38mm, the Khaki Field Mechanical 38mm wears more compactly on smaller wrists compared to the Kamasu Automatic Diver at 41.8mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Hamilton Khaki Field Mechanical 38mm sits at $500–$1,000 and the Orient Kamasu Automatic Diver at $250–$500. On the specs that outlast any price: the Khaki Field Mechanical 38mm uses Sapphire Crystal with 80 Hours, against Sapphire Crystal and 40 Hours on the Kamasu Automatic Diver. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 200m (20 ATM)
The Khaki Field Mechanical 38mm is rated to 50m (5 ATM) while the Kamasu Automatic Diver handles 200m (20 ATM). The Kamasu Automatic Diver offers superior water resistance.
Our Verdict
Hamilton
Khaki Field Mechanical 38mm
Choose the Hamilton Khaki Field Mechanical 38mm if you prioritize Hamilton/ETA Hand-Wound engineering, Swiss Made craftsmanship, and 50m (5 ATM) water resistance. At $500–$1,000, it delivers Hand-Wound H-50 (ETA 2801-2 base) with 80 Hours power reserve.
Check Price on AmazonOrient
Kamasu Automatic Diver
Choose the Orient Kamasu Automatic Diver if you value Orient In-House Automatic technology, Made in Japan heritage, and 41.8mm proportions. At $250–$500, the Automatic Caliber F6922 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Hamilton Khaki Field Mechanical 38mm and Orient Kamasu Automatic Diver represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Orient delivers Made in Japan engineering.
Frequently Asked Questions
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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.

