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
Very nice watch
Looks great, feels great, lightweight and comfortable. Radio sync is super cool. The moon phase is cool. I really like it.
My First Citizen
The Citizen Tsuki-yomi A-T is a stunning watch crafted from lightweight, durable Super Titanium™ with a scratch-resistant finish, offering exceptional comfort and a sleek, versatile look. Its atomic timekeeping ensures unmatched precision, syncing with global atomic clocks for perfect accuracy and automatic adjustments. The Eco-Drive-powered moon phase, displayed vividly on a lunar-textured dial, is both accurate and captivating, adding poetic charm. With a refined yet sporty design, clear legibility, and reliable features like 100m water resistance, this timepiece is a masterpiece of innovation and style, earning compliments everywhere. I love this Citizen watch!
Beautiful Watch
Love this watch. the dial is beautiful and the titanium is so light. The radio control makes time setting very easy.