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Citizen Tsuki-yomi A-T BY1010-81Z men's Eco-Drive watch, purple dial
Citizen Tsuki-yomi A-T BY1010-81Z men's Eco-Drive watch, purple dial, worn
Citizen Tsuki-yomi A-T BY1010-81Z men's Eco-Drive watch, purple dial, worn
Citizen Tsuki-yomi A-T BY1010-81Z men's Eco-Drive watch, purple dial, worn

Citizen

CITIZEN TSUKI-YOMI A-T Purple Men's Watch (BY1010-81Z)

Ref.BY1010-81Z

$612.00 $874.00
Shipping calculated at checkout.

Citizen Eco-Drive on a titanium bracelet.

  • 43mm case

    See dimensions

  • Eco-Drive

    Charged by any light. No battery to replace.

  • Sapphire crystal

    Highly scratch-resistant

  • 100m water resistant

    Fine for snorkelling, not scuba

Dial Purple 4 dials at 43mm

Why buy from Ducci

  • 5-year Citizen warrantyThe maker's full warranty, from the day you buy.
  • Authorized dealerEvery watch genuine and brand new.
  • 4.6 on Google
  • 22 years in businessSelling, and standing behind, good watches since 2004.
  • Free shipping over US$15030-day returns on regular-priced watches.

The moon, set by radio

Tsuki-yomi A-T was the first moonphase watch with atomic timekeeping. It sets itself from radio signals, shows the moon's phase and world time in 24 zones, in a 43mm titanium case.

Eco-Drive charges from any light, and the perpetual calendar handles every month's length. Water resistant to 100 metres.

Calibre H874 Eco-Drive
SapphireCrystal
10.87 mmThick

Compare with similar

Three similar watches, side by side.

This watchCitizen Tsuki-yomi A-T BY1010-81Z men's Eco-Drive watch, purple dial
Citizen CITIZEN TSUKI-YOMI A-T Purple Men's Watch (BY1010-81Z)BY1010-81Z$612.00Retail $874.00
Case size43 mm
MovementEco-Drive
CalibreH874
CrystalSapphire crystal
Water resistance100m
CaseSuper Titanium, Silver-Tone
BraceletSuper Titanium, Silver-Tone
DialPurple
WarrantyFull Citizen warranty

Swipe the table to see all four.

Specifications

CITIZEN TSUKI-YOMI A-T Purple Men's Watch (BY1010-81Z)

Front, drawn to scale

Dimensions

Case width
43 mm
Thickness
10.87 mm

Case and dial

Reference
BY1010-81Z
Case size
43 mm
Case
Super Titanium, Silver-Tone
Dial
Purple
Crystal
Sapphire crystal
Water resistance
100 metres Fine for snorkelling, not scuba

Movement

Type
Eco-Drive
Calibre
H874
Power
Charged by any light. No battery to replace.
Functions
Moonphase, World Time in 24 Time Zones, Radio Control, Perpetual Calendar, Day/Date, Atomic Timekeeping, Radio Control, Perpetual Calendar

Bracelet and warranty

Bracelet
Super Titanium, Silver-Tone
Clasp
Fold Over Clasp with Push Buttons
Warranty
Full Citizen warranty
Returns
30 days on regular-priced watches

Before you buy

The questions people ask most, answered first.

Is it genuine?

Yes. Genuine, brand new, with its full manufacturer warranty.

Can I return it?

Yes, within 30 days on regular-priced watches.

How can I pay?

Card, Apple Pay, Google Pay, PayPal or Shop Pay.

Is $612.00 a sale price?

No. It's our regular price, the best available from an authorized dealer.

What customers say about Ducci

4.6

On Google

Love my new watch!!!
The service was excellent !
Fits perfect based on measurements given!

KarenGoogle review

Amazing fast shipment and beautiful watch. Thank you!!

LaReinaGoogle review

Great prices and service was amazing

Google review

The Tsuki-yomi A-T in other dials

Four dials at 43mm.