Dial diameter: 36 mm, 904L steel one-piece middle case, screw-down caseback and winding crown. White Diamonds �C Oystersteel and White Gold BEZEL Fluted Winding Crown Screw Down, Double Lock Double Waterproof System CRYSTAL Scratch Resistant Sapphire, Water Resistant: 100m/330ft. Mechanical, self-winding movement, functions: central hours, minutes and seconds. Instant date for quick settings. The power reserve is approximately 70 hours. Clasp type: Folding Oysterclasp with easylink 5 mm comfort extension.