When traveling, the user may swap the 'home' and 'world' zones, thereby enabling proper time signal reception on a different continent while retaining the other time. The watch actually tracks two time zones-home and world-but synchronizes to the 'home' zone. The watches can synchronize with radio clocks in Japan, North America, and Europe, automatically selecting the correct frequency by location. The Skyhawk A-T line features radio-controlled timekeeping. Synchronized to atomic clocks, these watches are accurate to within one second in one hundred thousand years. Citizen Attesa Eco-Drive ATV53-3023 analog-digital chronograph with 3 area Radio Controlled reception (North America, Europe, Japan) Products Atomic timekeeping Ĭitizen launched the world's first multi-band atomic timekeeping watch in 1993 and has remained a pioneer of this field.
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