Citizen Eco-Drive Tsuki-yomi A-T Green Dial Super Titanium Watch 43mm - BY1010-57X

Items Description

The Citizen Eco-Drive Tsuki-yomi A-T Green Dial Super Titanium Watch 43mm - BY1010-57X is a radio-controlled moonphase timepiece designed for watch enthusiasts who value precision, sustainable power, and distinctive aesthetics. This 43mm model combines Citizen's proprietary Eco-Drive technology with a striking green dial, offering a blend of celestial complication and modern practicality for daily wear.

 

The Tsuki-yomi A-T series takes its name from the Japanese moon god, and this green-dialled variant reflects that celestial inspiration through its deep, textured dial finish. Powered by any light source, the watch eliminates battery replacement entirely, while the Super Titanium case provides a remarkably light yet durable frame. The radio-controlled atomic timekeeping ensures the watch stays accurate to the second, making it a reliable companion for travellers and professionals alike.

 

Key Advantages of the Citizen Eco-Drive Tsuki-yomi A-T Green Dial Super Titanium Watch 43mm - BY1010-57X

 

1. Eco-Drive Light-Powered Movement

At the heart of the Tsuki-yomi A-T lies Citizen's Calibre H874 Eco-Drive movement, which converts light from any source into electrical energy. This system runs continuously and sustainably, removing the need for periodic battery changes and making the watch a low-maintenance choice for long-term ownership.

 

• Light-Powered Charging: Absorbs natural and artificial light to keep the watch running indefinitely.
• No Battery Replacement: Eliminates the hassle and cost of servicing conventional quartz movements.
• Energy Reserve: Stores sufficient charge to keep the watch running through extended periods without light exposure.

 

2. Atomic Timekeeping with Radio Control

The A-T (Atomic Time) function automatically synchronises the watch with atomic time signals, ensuring the displayed time remains precise across different time zones. This feature is particularly useful for frequent travellers who need reliable, accurate time without manual adjustment.

 

• Radio Signal Reception: Receives calibration signals from atomic transmitters for automatic time correction.
• World Time Function: Displays local time in multiple major cities worldwide, selectable at the press of a button.
• Perpetual Calendar: Automatically accounts for month lengths and leap years until 2100, requiring no manual date adjustment.

 

3. Super Titanium Construction for Everyday Durability

The 43mm case and bracelet are crafted from Citizen's proprietary Super Titanium, a material roughly five times harder and about 40 percent lighter than standard stainless steel. This construction offers both scratch resistance and a featherlight feel on the wrist, making the watch comfortable for all-day wear without compromising toughness.

 

• Lightweight Comfort: The reduced weight of Super Titanium makes the 43mm case feel noticeably lighter than comparable steel watches.
• Scratch Resistance: Surface hardness protects against everyday abrasions from desks, door frames, and casual impacts.
• Hypoallergenic Properties: The material is suitable for wearers with sensitive skin, avoiding common allergic reactions to certain metal alloys.

 

4. Celestial Green Dial with Moonphase Complication

The deep green dial of the BY1010-57X is the defining visual feature of this model, setting it apart from other Tsuki-yomi A-T variants. The moonphase display at six o'clock tracks the lunar cycle with a practical and decorative function, while the textured dial surface catches light in ways that shift with wrist movement. Applied indices and dauphine hands maintain legibility against the rich backdrop, and a date window at three o'clock adds everyday utility.

 

• Moonphase Display: Shows the current phase of the moon through a dedicated subdial, useful for those who track lunar cycles for outdoor or professional activities.
• Date Window: Positioned at three o'clock for quick reference without complicating the dial layout.
• Reflective Dial Finish: The green surface creates subtle tonal shifts under different lighting, adding depth to the overall design.

 

5. Water Resistance and Luminous Readability

Rated to 100 metres of water resistance, the Tsuki-yomi A-T is suitable for swimming, snorkelling, and daily exposure to moisture without concern. Luminous coatings on the hands and hour markers ensure the time remains readable in dark environments, from evening events to early morning commutes.

 

• 100 Metre Rating: Handles recreational swimming and water-based activities without risk of ingress.
• Luminous Hands and Markers: Charged by daylight to provide sustained visibility in low-light conditions.
• Sapphire Crystal: Protects the dial from scratches with a high level of hardness, maintaining optical clarity over years of use.

 

The Citizen Eco-Drive Tsuki-yomi A-T Green Dial Super Titanium Watch is best suited for collectors and daily wearers who appreciate a distinctive green dial, the convenience of light-powered operation, and the precision of atomic timekeeping. For those who travel frequently or simply prefer a watch that requires minimal upkeep, the BY1010-57X offers a compelling combination of celestial styling and robust engineering.

Specifications of Citizen Eco-Drive Tsuki-yomi A-T Green Dial Super Titanium Watch 43mm - BY1010-57X

Brand Name	Citizen
Model number	BY1010-57X
Band Color	Gray
Dial color	Green
Display	Analog
Watch Movement Type	Quartz
Power Source	Solar Powered
Strap Type	Bracelet
Water Resistance Depth	100 meters
Clasp Type	Buckle
Water Resistance Level	Waterproof
Face Style	Skeleton

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Specifications
[Brand Name ]	Citizen
[Model number ]	BY1010-57X
[Band Color ]	Gray
[Dial color ]	Green
[Display]	Analog
[Watch Movement Type]	Quartz
[Power Source]	Solar Powered
[Strap Type]	Bracelet
[Water Resistance Depth]	100 meters
[Clasp Type]	Buckle
[Water Resistance Level]	Waterproof
[Face Style]	Skeleton

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