Citizen Tsuki-Yomi Radio Controlled Moon Phase Grey Watch BY1010-57H

Introducing the Citizen 'Tsuki-yomi' Radio-Controlled Moon Phase watch - the world’s first light-powered radio-controlled moon phase movement. Celebrating the 30th anniversary of the first CITIZEN radio-controlled watch. The Tsuki-yomi collection features the new radio-controlled Eco-Drive Cal. H874 movement, providing ±15 seconds accuracy per month. It boasts revolutionary Super Titanium™ material and beautifully crafted moon pattern dials. Using CITIZEN's "Luna Program" formula, the watch calculates the moon's phase daily from signals received from multi-band radio transmitters, automatically adjusting and displaying it at six o’clock. The dial showcases a striking grey moon surface pattern with a black outer ring and a date display at four o’clock. Powered sustainably by any light source, including moonlight, with Eco-Drive technology, this timepiece never requires a battery.