CITIZEN WATCHES PROMASTER. Take to the skies with the innovative Promaster Air men’s watch from CITIZEN WATCHES. This exceptional pilot’s watch features a stainless-steel case accented by a black dial incorporating advanced technology such as atomic time clock synchronization for superior accuracy, 1 second chronograph measures up to 60 minutes, and a perpetual calendar. The sleek dial is encased in a genuine sapphire crystal. The stainless-steel bracelet fastens with a safety fold over clasp with push buttons. This fine timepiece utilizes Eco-Drive technology powered by light, any light meaning it never needs new batteries. Water resistant up to 200 metres, this extraordinary watch will take you from the depths of the ocean to new heights in the air with its precision movement and unparalleled style. Case Diameter 46mm. Safety Fold Over Clasp with Push Button.