MODEL CASE
Oyster, 40 mm, Oystersteel

OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown

DIAMETER
40 mm

MATERIAL
Oystersteel

BEZEL
Smooth

WINDING CROWN
Screw-down, Twinlock double waterproofness system

CRYSTAL
Green sapphire, scratch-resistant

WATER RESISTANCE
Waterproof to 100 metres / 330 feet

MOVEMENT
Perpetual, mechanical , self-winding , with a magnetic shield to protect the movement

CALIBRE
3131, Manufacture Rolex

PRECISION
-2/+2 sec/day, after casing

FUNCTIONS
Centre hour, minute and seconds hands. Stop-seconds for precise time setting

OSCILLATOR
Paramagnetic blue Parachrom hairspring

WINDING
Bidirectional self-winding via Perpetual rotor

POWER RESERVE
Approximately 48 hours

BRACELET
Oyster, flat three-piece links

BRACELET MATERIAL
Oystersteel

CLASP
Folding Oysterclasp with Easylink 5 mm comfort extension link

DIAL
Intense black

DETAILS
Highly legible Chromalight display with long-lasting blue luminescence

CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)