Model Case: Oyster, 40 mm, Oystersteel and yellow gold

Oyster Architecture: Monobloc middle case, screw-down case back and winding crown

Diameter: 40 mm

Material: Yellow Rolesor - combination of Oystersteel and 18 ct yellow gold

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:

Movement: Perpetual, mechanical chronograph, self-winding

Calibre: 4130, Manufacture RolexPRECISION-2/+2 sec/day, after casing

Function: 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: 

Bracelet: Oyster, flat three-piece links

Bracelet Material: Yellow Rolesor - combination of Oystersteel and 18 ct yellow gold

Clasp: Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

Dial: 

Dial: Champagne-colour

Details: Dial with snailed small counters 

Certification:

Certification: Superlative Chronometer (COSC + Rolex certification after casing)