Invicta Men&#39;s 4470 Pro Diver Collection Swiss Automatic Watch Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch Resistant Sapphire Crystal; Stainless Steel Case and Band Magnified Date Function Luminous Hands; Silver Textured Dial; 26 Jewel Automatic; Exhibition Case Back; Screw Down Crown Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours