[time-nuts] Citizen Concept watch: Ultraprecise Eco-Drive movement Calibre 0100
brooke at pacific.net
Wed Apr 11 12:08:58 EDT 2018
Claims +/- 1 second per year and is autonomous. Uses an AT cut crystal at 8,388,608 Hz (2^23 ) and has a custom
temperature compensation for each watch. Solar powered, and the hands stop if the watch is in the dark to save power.
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