Sea Explorer is a 42.5mm automatic dive watch featuring sapphire crystal and Super-LumiNova® on hands, indexes and bezel markings for optimal visibility in dark underwater conditions. As indicated by the "Diver's" marking on the dial, this watch is ISO 6425 certified, making it expertly equipped for deep-sea diving up to 200 meters. This iteration boasts a glossy blue enamel dial and an integrated stainless steel bracelet. Japanese movement Automatic/3 Hand Date Blue 42mm Stainless Steel Silver Silver Stainless Steel 20 ATM