Certina DS Action - 3 Hands Stainless Steel Mens Quartz Watch C0324101104100 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 Stainless steel case with blue dial Water resistant to 30 ATM / 300 meters / 990 feet : suitable for professional marine activity serious surface water sports and skin diving