Case: Carbon fiber resin 45 x 40 MM Movement: Skeleton automatic mechanical movement Waterproof to 30 metres / 3 ATM -12/+12 sec/day precision Bidirectional self-winding via Perpetual rotor winding Approximately 40 hours power reserve Bracelet: Nylon and leather Detachable and adjustable Style: pea005-cfrpblk Color: Black Material: Carbon Fiber Resin