Stuhrling Original Men's 308.331513 Classic Delphi Prospero Automatic Skeleton Black Dial Watch Quality Automatic movement with 34 hours power reserve Stainless steel round shaped case with Krysterna crystal on front and back Black textured skeletonized dial with silvertone markers and hands Black alligator embossed genuine leather strap with white stitching Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving