Swiss Legend Men's 20028-ABR01C Planetimer Collection Automatic Stainless Steel Watchwith Winder High-quality 18-jewel Swiss automatic movement; functions without a battery; powers automatically with the movement of your arm Scratch-resistant sapphire crystal; polished stainless steel case; black alligator strap Date function Black textured dial with silver-tone hands and 4 high grade ruby stones set randomly on dial; screw-down crown; exhibition case back; watch winder included Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving