Perpetual Chrono A-T Black IP
Citizen Perpetual Chrono A-T Black IP Men's Watch AT4007-54E. Citizen Eco-Drive technology with atomic timekeeping makes this the most accurate watch in the world. This perpetual calendar is radio-controlled in 5 time zones, boasts a 1-second chrono that measures up to 60 minutes, and power reserve. Shown in stainless steel black ion plating with blue & luminous accents under non-reflective sapphire crystal.