Citizen Tsuki-yomi A-T BY1018-55X – Red Dial Super Titanium Eco-Drive Atomic Moonphase Watch
The Citizen Tsuki-yomi A-T BY1018-55X is a striking Eco-Drive atomic timekeeping watch that combines advanced Citizen technology with a bold deep red dial design. As part of Citizen’s innovative Tsuki-yomi A-T collection, this timepiece features a moonphase display, Atomic Timekeeping, World Time in 24 time zones, and a lightweight Super Titanium™ case and bracelet.
Powered by Citizen’s proprietary Eco-Drive technology, the BY1018-55X runs on any light source and eliminates the need for regular battery replacement. Designed for precision, travel, and everyday wear, this model offers a refined balance of Japanese watchmaking innovation, modern sport-luxury styling, and practical durability.
Design Overview
The 43mm silver-tone Super Titanium™ case gives the Citizen Tsuki-yomi A-T a strong yet comfortable wrist presence. Its deep red dial is inspired by the surface of the moon and is accented with black and silver-tone details for a bold, highly legible appearance. A window at 6 o’clock displays the current moon phase, adding a distinctive astronomical touch to the design.
The matching Super Titanium™ bracelet is lightweight, durable, and comfortable for daily wear. A sapphire crystal provides superior scratch resistance and hardness, while WR100 / 10 Bar / 333 ft water resistance makes this watch suitable for swimming, showering, and snorkeling.
Key Features
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Citizen Tsuki-yomi A-T Collection – Advanced moonphase watch with atomic timekeeping technology
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Eco-Drive Movement Caliber H874 – Powered by any light source
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Atomic Timekeeping / Radio Control – Designed for highly accurate timekeeping
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Moonphase Display – Displays the current phase of the moon
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World Time in 24 Time Zones – Ideal for travel and international use
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Perpetual Calendar – Automatically adjusts for date changes
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Day-Date Functionality – Practical everyday convenience
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43mm Super Titanium™ Case – Lightweight, durable, and comfortable
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Super Titanium™ Bracelet with fold over clasp and push buttons
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Sapphire Crystal – Superior scratch resistance and hardness
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WR100 / 10 Bar / 333 ft Water Resistance – Suitable for swimming, showering, and snorkeling
Case & Exterior
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Model: BY1018-55X
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Collection: Citizen Tsuki-yomi A-T
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Case Material: Silver-Tone Super Titanium™
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Case Diameter: 43 mm
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Lug Width: 22 mm
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Dial Color: Red
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Crystal: Sapphire Crystal
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Band: Super Titanium™ Bracelet
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Clasp: Fold Over Clasp with Push Buttons
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Weight: 105 g
Movement & Performance
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Movement: Citizen Caliber H874
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Technology: Eco-Drive, powered by any light source
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Timekeeping: Atomic Timekeeping / Radio Control
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Functions: Moonphase, World Time in 24 Time Zones, Perpetual Calendar, Day-Date
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Water Resistance: WR100 / 10 Bar / 333 ft
Why Choose the Citizen Tsuki-yomi A-T BY1018-55X?
The Citizen Tsuki-yomi A-T BY1018-55X is an excellent choice for anyone looking for a Citizen moonphase watch, a red dial Eco-Drive watch, or a Super Titanium atomic timekeeping watch. It combines light-powered convenience, radio-controlled accuracy, world time functionality, and a standout red dial design in one refined timepiece.
If you are searching for a Citizen red dial watch, a 43mm titanium men’s watch, a light-powered atomic watch, or a premium Citizen Tsuki-yomi A-T Eco-Drive moonphase watch, the BY1018-55X offers advanced functionality, modern design, and long-term reliability.
Instruction Manual for Caliber No. H874
For more details, visit the official Citizen website here.
Warranty:
This model includes Citizen’s 5-Year Limited Warranty for added confidence in your purchase.
▶︎Processing Time & Shipping Policy
▶︎Refund policy
We only carry CITIZEN USA products.
▶︎We DO ship internationally.
