REACTOR Men's 91808 Proton World Time Stainless Steel Watch with Black Band Watch featuring orange dial with three subdials and knurling texture at lugs, pushers, and bezel 45 mm stainless steel case with mineral dial window Japanese quartz movement with analog display Polyurethane band with double-locking fold-over clasp Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving