Frederique Constant Slimline Moonphase Manufacture vs Hamilton Khaki Field Mechanical 38mm

Frederique Constant's design language vs Hamilton's approach

The Frederique Constant Slimline Moonphase Manufacture features a Stainless Steel case at 42mm 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-705 (In-House) vs Hand-Wound H-50 (ETA 2801-2 base)

The Slimline Moonphase Manufacture runs the Automatic FC-705 (In-House) (In-House Automatic Manufacture, 42 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.

42mm vs 38mm — different wrist presence

At 42mm, the Slimline Moonphase Manufacture has a bolder wrist presence compared to the Khaki Field Mechanical 38mm at 38mm. Water resistance differs: 30m (3 ATM) vs 50m (5 ATM).

Hamilton sits in the lower tier

The Frederique Constant Slimline Moonphase Manufacture sits at $2,500–$5,000 and the Hamilton Khaki Field Mechanical 38mm at $500–$1,000. On the specs that outlast any price: the Slimline Moonphase Manufacture uses Convex Sapphire with 42 Hours, against Sapphire Crystal and 80 Hours on the Khaki Field Mechanical 38mm. Service intervals are typically 5-7 years for both.

30m (3 ATM) vs 50m (5 ATM)

The Slimline Moonphase Manufacture is rated to 30m (3 ATM) while the Khaki Field Mechanical 38mm handles 50m (5 ATM). The Khaki Field Mechanical 38mm offers superior water resistance.