Citizen Tsuki-Yomi A-T "Red"

Citizen Tsuki Yomi. Complications: Day-Date, power reserve, moon phase, AM/PM indicator subdial 100m Water Resistance Titanium Radio Controlled Eco Drive The Citizen Tsuki-yomi A-T (Calibre H874) is a radio-controlled watch that synchronizes with six atomic clock radio transmitters located around the world. These transmitters, often referred to as "atomic clocks" in the context of the watch's reception, ensure the watch maintains extreme accuracy (within 1 second every 100,000 years) by updating the time, date, and moon phase daily. The watch receives signals from these locations: Japan: Two transmitters (JJY). United States: One transmitter (WWVB in Fort Collins, Colorado). Europe: Two transmitters (Mainflingen, Germany, and Anthorn, England). China: One transmitter (BPC). Accuracy: >99.9999% accurate due to automatic radio synchronization. Movement: Calibre H874 Eco-Drive (light-powered). Function: World's first light-powered radio-controlled watch with an automatic, continuously adjusting moon phase display. Moon Calculation: The watch uses a proprietary algorithm called the "Luna Program" to calculate the moon phase, which is updated via the radio signals. Citizen Watch Its time is more accurate than your cell phone when it's synched up. 3 months old, light wear, 3 months of light scratches. 43mm diameter