Rolex Day-Date "President" 40mm Yellow Gold Silver Roman Dial
Specifications:
Brand:
Rolex
Model:
Day-Date 40
Reference Number:
228238-0002
CASE
Oyster Architecture
Monobloc middle case, screw-down case back and winding crown
Case Diameter
40 mm
Case Material
18 kt Yellow Gold
Crystal
Scratch-resistant sapphire, Cyclops lens over the date
Bezel
Fluted
Winding Crown
Screw-down, Twinlock double waterproofness system
Water Resistance
Waterproof to 100 metres / 330 feet
Case Back
Solid
DIAL
Dial Color
Silver
Details
Roman Numerals
BRACELET
Band Name
President, semi-circular three-piece links
Band Material
18 kt yellow gold
Clasp
Concealed folding Crownclasp
MOVEMENT
Movement
Perpetual, mechanical, self-winding
Calibre
3255, Manufacture Rolex
Precision
-2/+2 sec/day, after casing
Functions
Centre hour, minute and seconds hands. Instantaneous day and date in apertures, secure rapid-setting. Stop-seconds for exact time setting
Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
Winding
Bidirectional self-winding via Perpetual rotor
Power reserve
Approximately 70 hours
Certification
Superlative Chronometer (COSC + Rolex certification after casing)

