Citizen Watch Eco-Drive Tsuki-yomi A-T 43mm with Blue Dial - BY1010-57L
Citizen BY1010-57L Eco-Drive Tsuki-yomi A-T 43mm Watch with Blue Dial and Super Titanium Bracelet
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 meters. Caliber H874.
Features
- Movement Technology - H874
Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries.
General
Case
Dial
Strap/Bracelet
Movement
Approximate Dimensions
Warranty Information
Approximate Weight
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Frequently Asked Questions
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The Eco-Drive technology harnesses light from any natural or artificial source to continuously power the watch, eliminating the need for battery replacements. This sustainable system stores surplus energy efficiently, providing a power reserve of up to 2.5 years when fully charged.
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This watch offers a water resistance depth of 10 bar, equivalent to 100 meters (approximately 330 feet). It is suitable for everyday wear including swimming and snorkeling but not recommended for scuba diving or high-impact water sports.
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Key functions include atomic timekeeping for precise time accuracy, a perpetual calendar that adjusts for leap years, day and date display, moon phase indicator that visually represents the lunar cycle, world time covering 24 time zones, and radio control to automatically synchronize time.
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The case and bracelet are crafted from Super Titanium, known for superior scratch resistance and lightweight comfort. Additionally, the crystal is made from scratch-resistant sapphire, enhancing durability and maintaining a clear, legible display.
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It is driven by a quartz movement with the Citizen H874 caliber, ensuring highly accurate timekeeping. The combination of this quartz movement with Eco-Drive energy harvesting ensures dependable performance and low maintenance.
- Eco-Drive Movement Technology
- Moonphase
- World Time In 24 Time Zones
- Radio Control
- Perpetual Calendar
- Day-Date
- 2.5 Year Power Reserve
- Superior Scratch Resistance And Hardness
- SIlver-Tone Super Titanium Case
- Water-Resistant Up To 100 Meters
- Blue Dial Finish With Black And Silver Accents
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