Rolex Oyster Perpetual 41mm Green Dial 

Model Case: Oyster 41mm, Oystersteel. Oyster Architecture: Monobloc middle case, screw-down case back, and winding crown. Bezel: domed and winding crown, screw-down, twin lock double waterproofness system. Crystal: scratch-resistant sapphire, water-resistant up to 100 meters/ 330 feet. Movement, perpetual, mechanical, self-winding. Calibre, 3230 manufacture Rolex. Precision: 2/+2 sec/day, after casing. Functions, centre hour, minute, and second hands. Stop-seconds for precise time setting. Oscillator, paramagnetic blue Parachrom hairspring. Winding, bidirectional self-winding via perpetual