With a passion for speed and accuracy, the re-imagined Perpetual Chrono A.T features radio-controlled atomic clock synchronization for superior accuracy in 5 time zones. Shown here in a grey ion-plated stainless steel case and bracelet with a charcoal grey dial with sapphire blue accents, chronograph, perpetual calendar, alarm, 12/24-hour time, power reserve indicator, day/date, anti-reflective sapphire crystal, and 200 metres water resistance. Featuring Citizen Eco-Drive technology – powered by light, any light. It never needs a battery. Citizen started life in 1918 as the Shokosha Watch Research Institute. Famous for their pocket watches, the Institute produced a commercial model, the Calibre 16 Pocket Watch. Sold under the name of Citizen in 1924, the Calibre 16 started the journey for this Japanese watch brand. The introduction of solar-powered timepieces launched Citizen to international success. By far their most important and successful launch to date, the Eco-Drive threw away conventional ideas regarding standard battery powered watches and helped develop Quartz technology to new levels. The Chrono collection from Citizen embodies the true essence of Japanese engineering, made with the very best of materials and designed with performance in mind. This Citizen Chrono AT4127-52H will stand the test of time. Showcasing a beautiful 43mm stainless steel case, robust Sapphire crystal glass, and an elegant grey dial adorned with baton hour markers for enhanced legibility. Powered by a reliable Eco-Drive movement. Other features include a date and Chronograph complication, a stainless steel bracelet fastened with a deployment clasp for added security, and a water-resistance up to 200 metres. Explore the full Citizen range.