Day-Date 40 Oyster, 40 mm, platinum Reference 228236
Model case
Oyster, 40 mm, platinum
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
40 mm
Material
Platinum
Bezel
Fluted
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
Perpetual, mechanical, self-winding
Calibre
3255, Manufacture Rothtlex
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
Bracelet
President, semi-circular three-piece links
Material
Platinum
Clasp
Concealed folding Crownclasp
