Hamilton Khaki Field Mechanical 38mm vs Rolex Datejust 41

Hamilton's design language vs Rolex's approach

The Hamilton Khaki Field Mechanical 38mm features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Rolex Datejust 41 offers Oystersteel construction at 41mm with Sapphire Crystal with Cyclops. Both represent their brand's distinct design philosophy and heritage.

Hand-Wound H-50 (ETA 2801-2 base) vs Automatic Caliber 3235

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 Datejust 41 uses the Automatic Caliber 3235 (Rolex In-House Automatic, Superlative Chronometer (-2/+2 sec/day), 70 Hours reserve) at standard. The Khaki Field Mechanical 38mm edges ahead on power reserve.

38mm vs 41mm — different wrist presence

At 38mm, the Khaki Field Mechanical 38mm wears more compactly on smaller wrists compared to the Datejust 41 at 41mm. Water resistance differs: 50m (5 ATM) vs 100m (10 ATM).

Hamilton sits in the lower tier

The Hamilton Khaki Field Mechanical 38mm sits at $500–$1,000 and the Rolex Datejust 41 at $5,000–$10,000. On the specs that outlast any price: the Khaki Field Mechanical 38mm uses Sapphire Crystal with 80 Hours, against Sapphire Crystal with Cyclops and 70 Hours on the Datejust 41. Service intervals are typically 5-7 years for both.

50m (5 ATM) vs 100m (10 ATM)

The Khaki Field Mechanical 38mm is rated to 50m (5 ATM) while the Datejust 41 handles 100m (10 ATM). The Datejust 41 offers superior water resistance.