Citizen redefines atomic timekeeping with this turbine-inspired Promaster Skyhawk A-T timepiece. With atomic timekeeping in 43 cities, the watch features a perpetual calendar, dual time, alarms, and pilot's rotating slide rule bezel. The 46mm case and bracelet are crafted of stainless steel. The black dial is accented with silver-tone details to complete the look. Featuring Eco-Drive technology - powered by light, any light. Never needs a battery.