| Case Size - 41mm Case/Bezel Material - White Gold Dial - Silvery-Opaline with Black Oxidized applied Numerals Features - Hours, Minutes, Seconds Sub-Dial, Day, Date, Moon Phases, Month, Leap Year and Day/Night Indicators, Central Chronograph Hand and Instantaneous 30-min Counter, Chronograph and Perpetual Calendar Case Back - Sapphire Crystal and Interchangeable Full Back Bracelet/Strap - Hand-Sewn Alligator Leather with Square Scales in Matt Black Clasp - Fold-over Buckle Movement - Manually Wound, Caliber CH 29-535 PS Q Power Reserve - Approx 65 Hrs Water Resistant - 30m/100ft |