Tissot PRS 516 Quartz Chronograph T1004173605100 Imported Sapphire crystal - the triumph of modern science - most scratch resistant material on the market Quartz movement with analog display and sapphire crystal dial window Chronograph Black leather strap and stainless steel case with grey dial Water resistant to 10 ATM / 100 meters / 330 feet : suitable for snorkeling as well as swimming but not diving