Hamilton Khaki Field Mechanical 38mm vs Zenith Chronomaster El Primero

Hamilton's design language vs Zenith's approach

The Hamilton Khaki Field Mechanical 38mm features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Zenith Chronomaster El Primero offers Stainless Steel construction at 38mm with Domed Sapphire. Both represent their brand's distinct design philosophy and heritage.

Hand-Wound H-50 (ETA 2801-2 base) vs Automatic El Primero 3600 (5Hz)

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 Chronomaster El Primero uses the Automatic El Primero 3600 (5Hz) (In-House Automatic Chronograph Manufacture, 60 Hours reserve) at 36,000 vph (5 Hz). The Khaki Field Mechanical 38mm edges ahead on power reserve.

38mm vs 38mm — different wrist presence

At 38mm, the Khaki Field Mechanical 38mm is similarly sized compared to the Chronomaster El Primero at 38mm. Water resistance differs: 50m (5 ATM) vs 50m (5 ATM).

Hamilton sits in the lower tier

The Hamilton Khaki Field Mechanical 38mm sits at $500–$1,000 and the Zenith Chronomaster El Primero at $5,000–$10,000. On the specs that outlast any price: the Khaki Field Mechanical 38mm uses Sapphire Crystal with 80 Hours, against Domed Sapphire and 60 Hours on the Chronomaster El Primero. Service intervals are typically 5-7 years for both.

50m (5 ATM) vs 50m (5 ATM)

The Khaki Field Mechanical 38mm is rated to 50m (5 ATM) while the Chronomaster El Primero handles 50m (5 ATM). Both offer identical water resistance ratings.