Citizen BY1010-57X Super Titanium™ 'Tsuki-Yomi' Moon Phase Watch - W38382

Introducing the Citizen 'Tsuki-yomi' Radio-Controlled Moon Phase - the world’s first light-powered radio-controlled moon phase watch. Celebrating the 30th anniversary of the first CITIZEN radio-controlled watch, the Tsuki-yomi collection features a new radio-controlled Eco-Drive Cal. H874 movement with ±15 seconds accuracy per month. Crafted with revolutionary Super Titanium™ material, its dial showcases a beautiful moon pattern. Using CITIZEN's "Luna Program" formula, the watch calculates daily moon phases from signals received by multi-band radio transmitters, displaying it at six o’clock. Adorned with a striking green moon surface pattern, complemented by a black outer ring and a date display at 4 o’clock. Powered sustainably by any light source, including moonlight, using Eco-Drive technology.