Tsuki-yomi A-T
Atomic Timekeeping / Super Titanium
When breakthrough technology and spectacular design meet, the Tsuki-yomi A-T is reading the moon. It’s the world’s first moonphase watch combined with atomic timekeeping innovation from Citizen, and this 30th Anniversary model is nothing short of impressive. The styling embodies the moon’s surface and a window at 6 o’clock displays the current moon phase. The timepiece measures 43mm in a silver-tone Super Titanium™ case, where sharp faceted edges pair with an elevated design throughout for an eye-catching aesthetic on the wrist. The blue dial works in tandem with black accents and silver-tone touches for a display that’s as handsome as it is legible. In addition to its running time, the watch features a moon phase display, world time in 24 time zones, a perpetual calendar, and day-date functionality. Powered by Citizen’s proprietary Eco-Drive technology to provide light-powered vitality without ever needing a battery. Water resistant up to 100 metres. Calibre H874.
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Product Details
Model
- BY1010-57L
Movement Technology
- H874
- Eco-Drive
- Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries.
Case Size (mm)
- 43
Lug Width (mm)
- 22
Band Type
- Bracelet
- Super Titanium
Case Material
- Silver-Tone
- Super Titanium
Crystal
- Sapphire Crystal
- Superior scratch resistance and hardness
Clasp
- Fold Over Clasp with Push Button
Dial
- Blue
Water-Resistance
- WR100/10Bar/333ft (Swimming, Marine Sports)
Additional Functions
- Moonphase Indicator
- World Time in 24 Time Zones
- Day/Date
- Radio-Controlled
- Perpetual Calendar
Reviews
Awesome Watch!
This is my second citizen watch that I have owned. My first citizen was an eco-drive stainless steel strap unlike this titanium. This watch is made with precision and high quality. I like the fact that it’s light and you cannot feel that you’re wearing it.
Prepare to be Bothered.
Just within the first week of receiving my new Citizen Tsuki-yomi A-T watch, I was bothered. I was walking in my health club when a complete stranger, an approximately 30-year-old male, stopped me and said, "I just want you to know that I think your watch is really cool looking!". I have never had a stranger ever stop me like that before. He asked for some details, so I gave him the make and model, which he appreciated. Finally, I want to say that while the multiple-page owner's manual was initially intimidating, I was pleasantly surprised to find that setting up the watch was extremely easy. Once I figured out how to confirm the watch received the radio signal to synchronize it, I had the satisfaction of knowing I was good to go. No angst! I received an Apple Watch as a gift, but I found the alerts annoying, and I never really used the apps when they were readily available on my iPhone, so it was just distracting and a nuisance. This classic-style watch is extremely sporty yet not too complicated. I put an after-market red, white, and blue sports band on it, which adds just a little color contrast. I am extremely happy with it.
Very nice watch
Looks great, feels great, lightweight and comfortable. Radio sync is super cool. The moon phase is cool. I really like it.