Case: Streamlined 40 x 45 MM Stainless steel Bracelet: Stainless steel Detachable and adjustable Movement: Miyota automatic mechanical movement Waterproof to 30 metres / 3 ATM -12/+12 sec / day, after casing Precision:  -12/+12 sec/day After casing Winding Bidirectional self-winding via Perpetual rotor Power Reserve Approximately 40 hours   Style: pea001-gblk Color: Black Bezel / Black Dial Material: Stainless Steel