Design Rolex DATEJUST 31 mm medium size

Description

Design Rolex DATEJUST 31 mm medium size

Model case
first copy Rolex Oyster, 31 mm, yellow gold and diamonds

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

Diameter
31 mm

Bezel
Set with diamonds

Winding crown
Screw-down, Twinlock double waterproofness system

Water resistance
Waterproof to 100 metres / 330 feet

Movement
Perpetual, mechanical, self-winding

Calibre
2236, Manufacture Rolex

Precision
-2/+2 sec/day, after casing

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

Oscillator
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers

Winding
Bidirectional self-winding via Perpetual rotor

Power reserve
Approximately 55 hours