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Citizen Tsuki-yomi AT BY1010-81X, Perpetual Calendar Radio-Controlled Titanium Watch
Citizen

Citizen Tsuki-yomi AT BY1010-81X, Perpetual Calendar Radio-Controlled Titanium Watch

This Citizen Tsuki-yomi AT timepiece, reference BY1010-81X, is a men's radio-controlled watch featuring Eco-Drive technology, a perpetual calendar, and moon phase display in a durable titanium case.

€1,022.13 incl. VAT

In stock

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  • Dispatched within 1–2 business days. Delivery in 2–5 business days (Mon–Fri).
  • 2-year EU legal warranty of conformity

Description & specifications

Citizen

All Citizen watchesAbout Citizen

Tsuki-yomi AT. Men's watch. Eco-Drive system requires no battery replacement. Solar-powered, with a power reserve of 180 days. Features include automatic power save, charge indication, and overcharge prevention. Protected from magnetic fields. 12- and 24-hour time format. Automatic reception of signals from radio towers located in various parts of the world, which transmit time signals from specific atomic clocks. Time correction by radio signal across almost all of Europe, USA, Japan, and China. World time - 24 cities, with automatic daylight saving time adjustment. Automatic moon phase indicator. Function to switch moon phase display between the Northern and Southern hemispheres. Manual moon phase calibration. The textured dial is inspired by the surface of the moon and is protected by durable sapphire glass. Indices in the form of strokes. The date window is located at the 4 o'clock position. Retrograde day of the week indicator. Bracelet with a deployment clasp.

Key features

  • Eco-Drive solar power with 180-day reserve
  • Radio-controlled time synchronization
  • Perpetual calendar and moon phase display

Specifications

Brand
Citizen
Reference (MPN)
BY1010-81X
EAN
8018225037369
Model Reference
Citizen BY1010-81X
Country of Origin
Japan
Movement Type
Quartz
Calibre
Citizen H874
Case Material
Titanium with Duratect TIC coating
Dial
Green, black
Bracelet/Strap
Titanium with Duratect TIC coating
Water Resistance
100m (10 ATM)
Illumination
Luminous hands and markers
Crystal
Sapphire
Calendar
Perpetual calendar: date, day of week, moon phases
Dimensions
Diameter 43mm, Thickness 10mm, Bracelet width 22mm
Power Reserve
180 days (Eco-Drive)
Functions
Eco-Drive (solar powered), Power save function, Charge indicator, Overcharge prevention, Anti-magnetic, 12/24-hour format, Radio-controlled (atomic clock signal reception for Europe, USA, Japan, China), World time (24 cities, DST), Automatic moon phase indicator (switchable for Northern/Southern hemisphere), Manual moon phase calibration, Date window at 4 o'clock, Retrograde day of week indicator

Warranty

Every order is covered by the 2-year EU legal warranty of conformity from the day of delivery. If a fault appears, contact us and we arrange collection and a repair, replacement or refund at no cost to you.

Where the manufacturer adds its own warranty, the card or booklet is included with the watch.

Contact

Delivery

Dispatched within 1–2 business days, Monday to Friday. Every parcel is tracked and insured. Free delivery across Europe.

DestinationCostTransit
Belgium, Netherlands, LuxembourgFree1–2 business days
Germany, FranceFree2–3 business days
Rest of the EUFree3–5 business days

Carrier: DHL Express / DPD.

Shipping policy

Order & payment

Pay securely at checkout with:

  • Bank transfer (SEPA)
  • Visa / Mastercard — payment link by email

Bank transfer: you see our bank details right after placing the order. Card: we email you a secure payment link for your order, where you pay by Visa or Mastercard.

Payment methods

Returns

Changed your mind? Return the watch unworn, with its tags and papers, within 30 days of delivery. We refund you within 7 business days of receiving it.

Returns & refunds

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