Citizen AT4106-52X Perpetual Chrono A-T Bracelet Watch – W38311 Radio-Controlled. With a passion for speed and accuracy, the re-imagined Perpetual Chrono A-T features radio-controlled atomic clock synchronisation for superior accuracy in 5 time zones. Shown here with a 42mm rose plated case with a matching rose gold-tone bracelet, brown dial, chronograph, perpetual calendar, alarm, 12/24 hour time, power reserve indicator, day/date and anti-reflective sapphire crystal. Featuring Eco-Drive technology – powered by light, any light it never needs a battery.