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Hamilton Khaki Field Mechanical vs Khaki Field Automatic
Same 38mm case, wind it or let it wind itself
Quick Verdict
The Hamilton Khaki Field Mechanical and the Khaki Field Automatic are both 38mm, both have sapphire crystals and both have 80-hour reserves, and both sit in the $500–$1,000 band. The Mechanical is hand-wound, has no date and is rated to 50m. The Automatic winds itself, adds a date and a 24-hour inner ring, and is rated to 100m.
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Specifications Compared
| Feature | Hamilton Khaki Field Mechanical 38mm | Hamilton Khaki Field Automatic |
|---|---|---|
| Price | $500–$1,000 | $500–$1,000 |
| Case Size | 38mm | 38mm |
| Movement | Hand-Wound H-50 (ETA 2801-2 base) | Automatic H-10 |
| Caliber Type | Hamilton/ETA Hand-Wound | Automatic (ETA C07.611 base) |
| Power Reserve | 80 Hours | 80 Hours |
| Water Resistance | 50m (5 ATM) | 100m (10 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Clean dial against date and 24-hour ring
The Mechanical has no date window, which keeps the dial symmetrical and very clean. The Automatic adds a date and a 24-hour inner ring. Both are classic Hamilton field watches in a 38mm steel case.
Movement & Performance
H-50 hand-wound against H-10 automatic
The Mechanical runs the hand-wound H-50 (ETA 2801-2 base), 17 jewels at 21,600 vph. The Automatic runs the H-10 (ETA C07.611 base), 25 jewels at 21,600 vph. Both give 80 hours of reserve. The only practical difference is who does the winding: you, or your wrist.
Durability & Water Resistance
The Automatic has double the rating
Both have sapphire crystals. The Automatic is rated to 100m (10 ATM) and the Mechanical to 50m (5 ATM). If the watch will be in the pool often, the Automatic is the safer pick.
Wearability & Fit
Same 38mm case size
Both are 38mm. On diameter there is nothing between them.
Value & Cost of Ownership
Same price band
Both sit in the $500–$1,000 band. The Automatic gives you a date and more water resistance for roughly the same money; the Mechanical gives you the hand-wound experience.
Our Verdict
Hamilton
Khaki Field Mechanical 38mm
Choose the Khaki Field Mechanical if you enjoy winding a watch and want the cleanest dial. No date, a hand-wound movement, and the most traditional field-watch experience.
Check Price on AmazonHamilton
Khaki Field Automatic
Choose the Khaki Field Automatic if you want the more practical daily watch. It winds itself, shows the date, and doubles the water rating to 100m, which makes it the better choice for swimming.
Check Price on AmazonThe Bottom Line
The Hamilton Khaki Field Mechanical and Khaki Field Automatic share a 38mm case, a sapphire crystal and an 80-hour power reserve; the Mechanical is hand-wound with no date and 50m water resistance, while the Automatic winds itself, adds a date and is rated to 100m.
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.