Citizen watch eco drive divers wr200 mens bn0151 09l prove that a dive watch can be fun functional with the citizen iso certified promaster professional diver with eco drive technology it is powered by light and never needs a battery so you will never need to open your caseback or compromise your dive again featured with stainless steel case dark blue polyurethane strap and dark blue dial with aluminum ring on bezel one way rotating elapsed time and wr200