MODEL CASE
Oyster, 40 mm, Oystersteel

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

DIAMETER
40 mm

MATERIAL
Oystersteel

BEZEL
Fixed, with engraved tachymetric scale, in 18 ct yellow gold

WINDING CROWN
Screw-down, Triplock triple waterproofness system

CRYSTAL
Scratch-resistant sapphire

WATER RESISTANCE
Waterproof to 100 metres / 330 feet

MOVEMENT
Perpetual, mechanical chronograph, self-winding

CALIBRE
4130, Manufacture Rolex

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

FUNCTIONS
Centre hour, minute and seconds hands, small seconds hand at 6 o’clock. Chronograph (centre hand) accurate to within 1/8 of a second, 30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock. Stop seconds for precise time setting

OSCILLATOR
Paramagnetic blue Parachrom hairspring

WINDING
Bidirectional self-winding via Perpetual rotor

POWER RESERVE
Approximately 72 hours

BRACELET
Oyster, flat three-piece links

BRACELET MATERIAL
Oystersteel

CLASP
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

DIAL
Black

DETAILS
Highly legible Chromalight display with long-lasting blue luminescence