Hamilton Khaki Field Mechanical 38mm vs Mido Ocean Star GMT
Hamilton's field watch meets Mido's diver
Quick Verdict
The Hamilton Khaki Field Mechanical 38mm ($500–$1,000) offers Hamilton/ETA Hand-Wound precision in the tier below the Mido Ocean Star GMT ($1,000–$1,500). The Khaki Field Mechanical 38mm measures 38mm and is rated 50m (5 ATM). The Ocean Star GMT counters with Swiss Made craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Hamilton Khaki Field Mechanical 38mm | Mido Ocean Star GMT |
|---|---|---|
| Price | $500–$1,000 | $1,000–$1,500 |
| Case Size | 38mm | 44mm |
| Movement | Hand-Wound H-50 (ETA 2801-2 base) | Automatic Caliber 80 (Base ETA C07.661) |
| Caliber Type | Hamilton/ETA Hand-Wound | Automatic (ETA C07.661 base) |
| Power Reserve | 80 Hours | 80 Hours |
| Water Resistance | 50m (5 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire with Double-sided AR |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Hamilton's design language vs Mido's approach
The Hamilton Khaki Field Mechanical 38mm features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Mido Ocean Star GMT offers Stainless Steel construction at 44mm with Sapphire with Double-sided AR. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Hand-Wound H-50 (ETA 2801-2 base) vs Automatic Caliber 80 (Base ETA C07.661)
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 Ocean Star GMT uses the Automatic Caliber 80 (Base ETA C07.661) (Automatic (ETA C07.661 base), 80 Hours reserve) at 21,600 vph (3 Hz). Power reserves are closely matched.
Wearability & Fit
38mm vs 44mm — different wrist presence
At 38mm, the Khaki Field Mechanical 38mm wears more compactly on smaller wrists compared to the Ocean Star GMT at 44mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Hamilton sits in the lower tier
The Hamilton Khaki Field Mechanical 38mm sits at $500–$1,000 and the Mido Ocean Star GMT at $1,000–$1,500. On the specs that outlast any price: the Khaki Field Mechanical 38mm uses Sapphire Crystal with 80 Hours, against Sapphire with Double-sided AR and 80 Hours on the Ocean Star GMT. 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 Ocean Star GMT handles 200m (20 ATM). The Ocean Star GMT 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 AmazonMido
Ocean Star GMT
Choose the Mido Ocean Star GMT if you value Automatic (ETA C07.661 base) technology, Swiss Made heritage, and 44mm proportions. At $1,000–$1,500, the Automatic Caliber 80 (Base ETA C07.661) with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Hamilton Khaki Field Mechanical 38mm and Mido Ocean Star GMT represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Mido delivers Swiss Made 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.