TW Steel Slim Line Black Dial Black Leather Mens Watch TW1303 Sapphire crystal - the triumph of modern science - most scratch resistant material on the market Quartz movement with analog display and sapphire crystal dial window Date calendar, water-resistant Black leather stainless steel case with black dial Water resistant to 5 ATM / 50 meters / 165 feet : suitable for use around household sinks playing sports and swimming in shallow water but not bathing snorkeling or scuba diving