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WATCH
Self-winding mechanical movement. Caliber 324 S QA LU 24H/303. Day, date, month in apertures. Moon phases and 24-hour display. Sweep seconds hand.
DIAL
Dial: black, gold applied hour markers with luminescent coating.
CASE
Steel. Screw-down crown. Sapphire-crystal case back. Water-resistant to 120m. Case diameter (10-4 o'clock): 40.5 mm. Height: 11.3 mm.
BRACELET / STRAP
Alligator strap with rectangular scales, hand-stitched, matt black. Nautilus fold-over clasp.
CH 28-520 C/528
SELF-WINDING
Chronograph with 60-minute counter. Date in an aperture. Diameter: 30 mm. Height: 6.63 mm. Parts: 308. Bridges: 14. Jewels: 32. Power reserve: min. 45 hours - max. 55 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax®. Vibrations/hour: 28 800 (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.