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: black, gold applied hour markers with luminescent coating. Steel. Screw-down crown. Sapphire-crystal case back. Water resistant to 120 m. Case diameter (10-4 o'clock): 40.5 mm. Height: 11.3 mm. Matt black leather strap. Nautilus fold-over clasp.