Frederique Constant Highlife Automatic COSC vs Hamilton Khaki Field Mechanical 38mm

Frederique Constant's design language vs Hamilton's approach

The Frederique Constant Highlife Automatic COSC features a Stainless Steel case at 39mm with Convex Sapphire protection. The Hamilton Khaki Field Mechanical 38mm offers Stainless Steel construction at 38mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

Automatic FC-303 (COSC) vs Hand-Wound H-50 (ETA 2801-2 base)

The Highlife Automatic COSC runs the Automatic FC-303 (COSC) (COSC-Certified Automatic, 38 Hours power reserve) at 28,800 vph (4 Hz) frequency. The Khaki Field Mechanical 38mm uses the Hand-Wound H-50 (ETA 2801-2 base) (Hamilton/ETA Hand-Wound, 80 Hours reserve) at 21,600 vph (3 Hz). The Khaki Field Mechanical 38mm offers a longer power reserve.

39mm vs 38mm — different wrist presence

At 39mm, the Highlife Automatic COSC has a bolder wrist presence compared to the Khaki Field Mechanical 38mm at 38mm. Water resistance differs: 100m (10 ATM) vs 50m (5 ATM).

Hamilton sits in the lower tier

The Frederique Constant Highlife Automatic COSC sits at $1,500–$2,500 and the Hamilton Khaki Field Mechanical 38mm at $500–$1,000. On the specs that outlast any price: the Highlife Automatic COSC uses Convex Sapphire with 38 Hours, against Sapphire Crystal and 80 Hours on the Khaki Field Mechanical 38mm. Service intervals are typically 5-7 years for both.

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

The Highlife Automatic COSC is rated to 100m (10 ATM) while the Khaki Field Mechanical 38mm handles 50m (5 ATM). The Highlife Automatic COSC is better suited for water activities.