Dial diameter: 36 mm. Integral middle case, screw-in case back and winding crown, screw-in double-lock double waterproof system. Mirror Material: Scratch Resistant Sapphire Crystal Glass, Cyclops Lens Date Display. Water resistant to 100 meters/330 feet. Mechanical, self-winding movement, functions: central hours, minutes and seconds, instant date with quick setting, power reserve: 70 hours. Bracelet Type: Jubilee, Five Piece Bracelet. Clasp Type: Folding Oysterlock with Easylink 5 mm Comfort Extension.