Hamilton Khaki Field Mechanical 38mm vs Hamilton Intra-Matic Auto Chronograph

Hamilton's design language vs Hamilton's approach

The Hamilton Khaki Field Mechanical 38mm features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Hamilton Intra-Matic Auto Chronograph offers Stainless Steel construction at 40mm with Sapphire (Domed). Both represent their brand's distinct design philosophy and heritage.

Hand-Wound H-50 (ETA 2801-2 base) vs Automatic H-31

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 Intra-Matic Auto Chronograph uses the Automatic H-31 (Valjoux-Based Automatic Chronograph, 60 Hours reserve) at 28,800 vph (4 Hz). The Khaki Field Mechanical 38mm edges ahead on power reserve.

38mm vs 40mm — different wrist presence

At 38mm, the Khaki Field Mechanical 38mm wears more compactly on smaller wrists compared to the Intra-Matic Auto Chronograph at 40mm. 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 Hamilton Intra-Matic Auto Chronograph at $2,500–$5,000. On the specs that outlast any price: the Khaki Field Mechanical 38mm uses Sapphire Crystal with 80 Hours, against Sapphire (Domed) and 60 Hours on the Intra-Matic Auto Chronograph. 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 Intra-Matic Auto Chronograph handles 100m (10 ATM). The Intra-Matic Auto Chronograph offers superior water resistance.