Citizen Eco-Drive x Radio-Controlled ft. Tsuki-Yomi Moonphase aka 30th Anniversary Men Formal Round 100m Water Resistant Watch BY1010-81Z BY1010 BY-1010
Experience groundbreaking innovation with the Citizen Tsuki-Yomi Radio-Controlled Moon Phase watch - the world first light-powered moon phase movement. Featuring Super Titanium construction and self-adjusting moon phase display via radio signals. The striking purple lunar dial and Eco-Drive technology (powered by any light) make this 30th-anniversary edition a true horological marvel.
Caliber Number / Movement H874 (solar Eco-Drive)
Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month without reception)
Crystal Sapphire crystal
Luminous Luminous on hands and indexes
Case / Band Material Super Titanium (Duratect) case with Super Titanium (Duratect) band (three-fold clasp with push-button release)
Water Resistance 100m / 10 bar
Case Size Thickness: 10.9 mm Diameter: 43.0 mm Length: 47.3 mm Lug Width: 22.0 mm
Other Specifications Citizen Eco-Drive x Radio-Controlled ft. Tsuki-Yomi Moonphase Summer time (automatic / manual switching) World time function (24 time zones) Perpetual calendar (to 28 February 2100) Moon phase display (automatic calculation) Moon phase display switching function (Northern or Southern Hemisphere) Power reserve indicator Overcharge prevention function Insufficient charge warning function Power saving function (hands stop to save power when left in the dark) Automatic hand position alignment function Day, date and 24-hour display Regular timekeeping (analog display)
Global Radio-Controlled Function Receiving time signal (automatic, on demand, auto recovery) Signal stations: Japan (East/West) / USA / Germany / China Automatic signal station selection function (for Japan standard signals only) Confirming reception status (RX) Indicating the result of last reception (OK/NO)
