Luminox Field Sport Timer 0921 Automatic Mens Wrist Watch self-powered illumination | Black White Color:Black/White | Size/Diameter: 42mm | Case: 316L stainless steel | Bezel: 316L stainless steel with black ceramic ring, uni-directional turning. Case back: 316L stainless steel, screw in | Crystal: Antireflective sapphire crystal | Crown: 316L stainless steel, screw down, protected crown. Weight: 95grams with leather strap | Water Resistance: 200 meters, 20 ATM, 660 feet, individually tested | Movement: SW-220 Carbon reinforced unidirectional ratcheting bezel | Stainless steel 316L bracelet, diver buckle with security clasp and Luminox signature buckle.