Dial diameter: 41 mm, integral middle case, screw-down caseback and winding crown. Notched bezel. Screw-in double lock double waterproof system. Scratch resistant sapphire, Cyclops lenses dated. Water resistant to 100 meters/330 feet. Permanent, mechanical, self-winding movement. Functions: central hours, minutes and seconds. About 70 hours of power reserve. Clasp Type: Folding Oysterlock with Easylink 5 mm Comfort Extension.