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 meters. Caliber H874.
Tsuki-yomi A-T
Free Bracelet Sizing
5 Year limited warranty
Product Details
Model
- BY1018-55X
- 9/19/2023
Movement Technology
- H874
- Eco-Drive
- Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries.
Case Width (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 Buttons
Dial
- Red
Water-Resistance
- WR100/10Bar/333ft [Swimming, Showering & Snorkeling]
Additional Functions
- Moonphase
- World Time in 24 Time Zones
- Radio Control
- Perpetual Calendar
- Day-Date
- Atomic Timekeeping
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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.
Very Nice
This watch is absolutely beautiful. I'm adding it to my other 5 citizen watches. Love all the features..
Wonderful
This is an amazing watch. Been wearing Citizen watches for over 20 years and I must say it's the best one I've ever own.
One of the Best
I purchased this watch a few weeks ago from Reeds Jewelry. A full review is offered there if you care to look. Quite simply stated, at this price point, this Citizen Tsuki-yomi A-T BY1018-55XX is one of the best wrist watches on planet earth. From practical to complications, this watch out shines many other brands. As hard as I have tried I can find very little wrong with this particular model. The setup and accuracy of this time piece cannot be told without making a fool out of myself. There is simply nothing to complain about here. If you are desiring a men's watch that checks all boxes, then your hunt is over with.
Must have for your collection
Love the design
Beautiful watch! If you are thinking about buying it do it! You will not regret it?
Perfecr
When I opened the box it looked exactly as I expected - beautiful. The bracelet is very light and the moon phase is a plus. All good so far.
To the moon Alice
I own 6 Citizen watches and have never had one fail . The moon phase Watch I just purchased is light and durable . I normally wear a Citizen diver or pilot watch for the easy to read dial and 200 meter WR. The new Moon Phase watch is a pleasure to wear and it self as long as it gets a signal. I leave mine in the window when I am not wearing it and it is ready and accurate at all times. I have owned the best of the Swiss watches but I have become a function over form guy. The watch is a hit and more beautiful in person then in photos.
Beautiful Watch
Very nice looking watch. Like the moon phase addition. Citizen has never disappointed me in quality and style. This is my 12th Citizen and I keep coming back.
Love my Tsuki-yomi A-T!!!
Love my Tsuki-yomi A-T!!! the color is more wine or purple that "red" Will say there is a video on Youtube that was helpful to set it up, directions were limited. video is by BubbasBistro.
Incredibly Beautiful
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.
