Swiss Legend Men&#39;s 20030-BB-12 Sportmatic Automatic Watch Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-Resistant Sapphire Crystal; Black Ion Plated Stainless Steel Case and Band Date Function Black Textured Dial; Luminous Gold-Tone Hands and Hour Markers; Exhibition Case Back; Screw Down Crown; Watch Winder Included Water resistant to 660 feet (200 M): suitable for recreational scuba diving