ROLEX SUBMARINER YELLOW GOLD BLUE DIAL 6643

Model case

Oyster, 40 mm, yellow gold

Oyster architecture

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

Diameter

40 mm

Material

18 ct yellow gold

Bezel

Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in ceramic, numerals and graduations coated in gold

Winding crown

Screw-down, Triplock triple waterproofness system

Crystal

Scratch-resistant sapphire, Cyclops lens (2.5x) over the date

Water-resistance

Waterproof to 300 metres / 1,000 feet

Movement

Perpetual, mechanical, self-winding

Calibre

3135, Manufacture Rolex

Functions

Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting

Precision

Officially certified Swiss chronometer (COSC)

Oscillator

Paramagnetic blue Parachrom hairspring

Winding

Bidirectional self-winding via Perpetual rotor