CITIZEN® PROMASTER. Air Skyhawk A-T, the latest addition to the ultramodern Promaster Air collection. The performance-based design is expressed via silver-tone stainless steel case equipped with a black leather strap. The black dial presents the advanced functions of the watch, including atomic time clock synchronization for superior accuracy, time adjustment available in 43 world cities, a 1/100 second chronograph measuring up to 24 hours, a perpetual calendar, GMT dual time (second time zone), 2 alarms, a 99-minute countdown timer, a digital backlight display, a Universal Coordinated Time (UTC) display, and a power reserve indicator. Maintaining the robust standards of the Promaster Collection, the watch is water resistant up to 200 metres. Powered by Citizen’s proprietary Eco-Drive technology to provide light-powered vitality continuously and sustainably without ever needing a battery. Calibre U680. Case Diameter 46mm. Buckle.