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 deep red 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 a 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.
Tsuki-yomi A-T
Product Details
Model
- BY1018-55X
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
- Red
Water-Resistance
- WR100/10Bar/333ft (Swimming, Marine Sports)
Additional Functions
- Moonphase Indicator
- World Time in 24 Time Zones
- Day/Date
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Reviews
Beautiful watch! If you are thinking about buying it do it! You will not regret it?
This watch is absolutely stunning. Incredibly light and comfortable because of the titanium. The face is not too big, the perfect size. But the most amazing thing is the color. I swear there is a lot of plum and purple in there, and it just rocks! Another reason I love this watch is because the inner dials don't dominate the design but compliment it. I am thrilled to be wearing this watch. Total winner.
Got this today from my wife for my birthday. I’m not a guy with any style but dang this thing is pretty.
The red moon dial is stunning. It looks best under bright sunlight. The super titanium makes the watch very light in the hand. The moon phase dial shows the current state of the moon in your location. It’s very accurate and it’s also adjusted by the radio signal for accuracy. This watch looks perfect with a dress shirt as well as casual wear. This is now my favorite watch to date.
The red moon dial is stunning. It looks best under bright sunlight. The super titanium makes the watch very light in the hand. The moon phase dial shows the current state of the moon in your location. It’s very accurate and it’s also adjusted by the radio signal for accuracy. This watch looks perfect with a dress shirt as well as casual wear. This is now my favorite watch to date.
The red moon dial is stunning. It looks best under bright sunlight. The super titanium makes the watch very light in the hand. The moon phase dial shows the current state of the moon in your location. It’s very accurate and it’s also adjusted by the radio signal for accuracy. This watch looks perfect with a dress shirt as well as casual wear. This is now my favorite watch to date.
This watch was everything I hoped for and more. It is absolutely beautiful and gets a lot of attention. The only thing I'd say is that the "red" is more of a light maroon or lavender. Definitely not red as in the pictures but it really is quite stunning in person.
This watch was everything I hoped for and more. It is absolutely beautiful and gets a lot of attention. The only thing I'd say is that the "red" is more of a light maroon or lavender. Definitely not red as in the pictures but it really is quite stunning in person.
It is a beautiful watch, very easy to use. I do however wish it came with a guide.
Watch was perfectly sized thanks to the free sizing service. It fit perfectly on the wrist. I don't normally buy watches greater than 40mm, but this didn't overwhelm my wrist with the size. Great eco drive quartz, that saves me from winding and will become my travel watch. Atomic time keeping is a good feature to have when traveling around the world and different time zones. The titanium is great because I wanted to something lightweight. The titanium texture isn't as smooth, but acceptable at this price point. The overall case finish doesn't have a high polish, and smooth texture as some other citizen titanium watches. The lume on indexes and hands are good under shady or darker environments. Various photos depict a vibrant red moon dial, but it is actually a reddish purple hue. Even under brighter conditions the dial doesn't radiat red as much as photos asvertise. Although I really hoped the red dial had a brighter red hue, but I have grown to like the purple accents. Overall good purchase, and at this price point it checked all my requirements of a good watch.
Lovely Watch
I really like everything about this watch. Being able to auto set to the atomic time is truly a wonderful aspect I don’t take for granted. The dial color is beautiful and the titanium gives it a great feel. I couldn’t be happier with this watch!
High value purchase
Great watch at a great price, beat Amazon by more than 100$
Perfect
Just as described, it's got some heftyness to it. First watch I've ever owned and beyond pleased with it. Thanks to the Citizen team.
This watch does it all AND looks great doing it.
Wonderful watch, once set it does everything I could ask for. Initial struggles with setting, but 3 minute call to their 800 number got me going. If I keep up with a little light now and then, I don't expect to have to mess with any further setting.