Redefining atomic timekeeping, in the Promaster Collection, with a turbine inspired bold and powerful design. The newest edition, limited to 5,000 pieces, is the CITIZEN Limited Edition Super Titanium™ Skyhawk A-T. A remarkably dynamic and visually appealing timepiece featuring chronograph, perpetual calendar, dual time, alarms, countdown timer, digital backlight and UTC displays, power reserve and pilot's rotating slide rule bezel. This model appears in Super Titanium™ with black dial and bright cobalt blue accents.Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number U680.