Louis Erard Men's Heritage 40mm Steel Bracelet & Case Quartz Silver-Tone Dial Analog Watch 16930AA11.BMA39 Sapphire crystal - the triumph of modern science - most scratch resistant material on the market. With extra anti glare coating Quartz movement with analog display and anti reflective sapphire dial window Date calendar, water-resistant Stainless steel case with silver-tone 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