This rugged diver-style watch features a carbon reinforced polymer injection case with a uni-directional polymer ratcheting bezel. The crown is a double gasket, push-in type (helps attain water resistance to 200 meters). The movement is a jeweled Swiss Quartz type with a battery life of up to 45 months. The hands and the dial have the Luminox self-powered illumination system that requires no charging and there is no button to push. Great watch for your next camping trip or nature hike. Case: Black Carbon reinforced Polymer, 43mm diameter. Band: High quality PU rubber dive strap with buckle, 22mm. Water Resistant: 20 ATM Warranty: 1 year