Pulsar Men's PS2001 21 Jewel Mechanical Self-Winding Battery-Free Automatic Brown Leather Band Stainless-Steel Case Blue Dial Watch 21-jewel mechanical automatic Self-winding battery-free power On-dial aperture displays balance wheel Luminous hands; exhibition screw down case back Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving