Perpetual Calendar Atomic Timekeeping. This is the PCAT. The latest addition to the esteemed collection from Citizen is an updated take on an iconic design, with the refreshed aesthetic pairing a modern case and 5-link bracelet with an iconic chronograph display. The silver-tone stainless steel exterior makes use of a robust appearance with two bold pushers flanking a pair of bold guards and a crown at the center of it all. A bold tachymetric scale on the exterior and a world timer ring on the dial add to the watch's all-purpose credentials, while rose gold-tone details upon the dark display add to its sharp looks. Features of the new PCAT include atomic timekeeping with synchronized time adjustment in 24 time zones, a 1 second chronograph that measures up to 60 minutes, a perpetual calendar, indication of both 12- and 24-hour time, an alarm, a power reserve indicator, the day, and the date. Powered by Citizen’s proprietary Eco-Drive technology to provide light-powered vitality continuously and sustainably without ever needing a battery. Caliber E660.