Rolex Day-Date 41mm in black, diamond-set dial

Model case

Type

• Oyster, 41 mm, yellow gold

Diameter

• 41 mm

Material

• Yellow gold

Bezel

• Diamond-set

Oyster Architecture

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

Winding crown

• Screw-down, Twinlock double waterproofness system

Crystal

• Scratch-resistant sapphire, Cyclops lens over the date

Water resistance

• Waterproof to 100 metres (330 feet)

Movement

Type

• Perpetual, mechanical, self-winding

Calibre

• 3155, Manufacture Rolex

Precision

• -2/+2 sec/day, after casing

Oscillator

• Paramagnetic blue Parachrom hairspring. High performance Paraflex shock absorbers

Winding

• Bidirectional self-winding via Perpetual rotor

Functions

• Centre hour, minute and seconds hands. instantaneous day and date in apertures, secure rapid-setting. Stop-seconds for exact time setting

Power reserve

• Approximately 70 hours

Bracelet

Type

• President, semi-circular three-piece

Bracelet Material

• 18 kt yellow gold

Clasp

• Concealed folding Crownclasp

Dial

Type

• Black

Certification

• Superlative Chronometer (COSC+ Rolex certification after casing)

Case reference 218348