Seiko Men's Two-Tone Kinetic Dress Watch Round two-tone watch in stainless steel with gold-tone stripes on bracelet, semi-circle on inner dial, and exhibition case back 39.5 mm stainless steel case with Hardlex dial window Japanese movement with analog display Requires no battery, powers Kinetically with the movement of your arm Stainless steel link bracelet with fold-over push-button-clasp Water resistant to 100 m (330 ft): In general, suitable for swimming and snorkeling, but not scuba diving.