Sport design combined with superior accuracy results in the expansion of the CITIZEN Perpetual Chrono A-T Collection, or PCAT, which syncs to the atomic clock for ultra accuracy. This Limited Edition atomic timekeeping watch is powered by any light with Eco-Drive Technology. Shown here in black ion-plated stainless steel case, black polyurethane and stainless steel strap with bold black dial, chronograph, perpetual calendar, 12/24-hour time, alarm, power reserve, tachymeter, day and date. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number E650.