Oyster, 40 mm, Oystersteel.
Monobloc middle case.
Screw-down case back and winding crown.
Smooth bezel.
Screw-down crown.
Twinlock double waterproofness system.
Scratch-resistant sapphire crystal.
Waterproof to 100 metres / 330 feet.
Perpetual mechanical self-winding movement with a magnetic shield.
Caliber 3131 Manufacture Rolex.
Precision : -2/+2 sec/day, after casing.
Functions:
Centre hour, minute and seconds hands.
Stop-seconds for precise time setting.
Paramagnetic blue Parachrom hairspring.
Bidirectional self-winding via Perpetual rotor.
Approximately 48 hours of power reserve.
Oystersteel flat three-piece links bracelet.
Folding Oysterclasp with Easylink 5 mm comfort extension link.