Skip to main content
VELOCEVELOCE
HOMEFEEDNEWSBRANDSCLUBSDEALERS SHOP
SIGN IN
HOMEBRANDSCLUBSDEALERS SHOP

VELOCE

The Watch Collector's Community

Download on theApp Store
Get it onGoogle Play

FOLLOW

DISCOVER

The JournalWatch Collector BlogCommunity FeedWatch BrandsAuthorized DealersSubmit Watch News

FEATURES

The Watch BoxTrack Your CollectionWhy Track Your WatchesCommunitySocial for CollectorsService RecordsLive Brand DisplayFor CollectorsFor Authorized DealersAdd or Claim Your ListingFor Watch BrandsWhy Veloce

MARKETPLACE

Browse WatchesSell Your WatchBuy Pre-Owned SafelyDealer ConsignmentInvite a Dealer — Earn $25Marketplace in the ShopEveryday Carry (EDC)

GUIDES

Watch GlossaryAutomatic vs QuartzInside a MovementWater ResistanceWatch Size GuideStart CollectingSpot a FakeShare Your WatchWatch Games

COMPANY

About VeloceContactTerms of ServicePrivacy PolicyAccessibilityDelete Account

© 2026 Veloce — All rights reserved.

Built for watch collectors, by a watch collector.

Citizen Eco-Drive Tsuki-yomi Super Titanium Radio Controlled Grey Dial BY1010-81H 100M Men's Watch | Veloce
ALLALL WATCHESOMEGACASIOCITIZENHAMILTONSEIKOTISSOTFOSSILORIENTBULOVADOXAAVI-8LUMINOXTAG HEUERORISBREITLING CLEARANCE
Citizen Eco-Drive Tsuki-yomi Super Titanium Radio Controlled Grey Dial BY1010-81H 100M Men's Watch

Watch

Citizen Eco-Drive Tsuki-yomi Super Titanium Radio Controlled Grey Dial BY1010-81H 100M Men's Watch

Be the first to review
$675.05$718.75SALE
or 4 interest-free payments of $168.76 withShop Pay
In stock · ready to ship

Quantity

1
Free Worldwide Shipping 30-Day Returns
Authenticity guaranteed on every timepiece

Why you'll love it

A technologically advanced timepiece for the modern explorer.

Nick here at Veloce personally ensures every order ships and arrives. Not sure it's the right piece, or want something different?f Reach out — a real person will help you sort it, unlike the faceless shops out there.

Message Nick →

DESCRIPTION

The Citizen Eco-Drive Tsuki-yomi Super Titanium Radio Controlled BY1010-81H is a sophisticated men's watch designed for the modern global traveler and watch enthusiast. Combining advanced technology with elegant aesthetics, this timepiece offers precision and style. Its durable titanium construction ensures comfort and longevity, making it suitable for daily wear and special occasions.

This Citizen watch features a striking grey dial with an intricate moonphase display, adding a touch of celestial charm. Powered by Citizen's innovative Eco-Drive movement, it harnesses light energy, eliminating the need for battery changes. The radio-controlled functionality ensures atomic timekeeping accuracy, while world time capabilities make it an ideal companion for international journeys.

Highlights:

  • Eco-Drive Movement: Powered by light, never needs a battery.
  • Radio Controlled: Atomic timekeeping for superior accuracy.
  • Super Titanium: Lightweight and highly durable case and bracelet.
  • Moonphase Display: Elegant and functional lunar phase indicator.
  • World Time: Convenient for international travel.

With its robust 100m water resistance and scratch-resistant sapphire crystal, the Citizen BY1010-81H is built to withstand the rigors of an active lifestyle while maintaining its refined appearance. It's a perfect blend of high-tech features and classic watchmaking artistry.

SPECIFICATIONS

Model/Ref
BY1010-81H
Gender
Men's
Display
Analog
Movement
Eco-Drive (Caliber: H874)
Case Material
Titanium
Case Size
43mm
Case Thickness
10.8mm
Band Material
Titanium
Lug Width
22mm
Crystal
Sapphire Crystal
Dial Colour
Grey
Water Resistance
100m / 10ATM

FREQUENTLY ASKED

What type of movement does the Citizen BY1010-81H use?
The Citizen BY1010-81H features an Eco-Drive movement (Caliber: H874), which is powered by light and does not require battery changes.
Is this watch suitable for swimming?
Yes, with a water resistance of 100m (10ATM), the Citizen BY1010-81H is suitable for swimming and snorkeling.
What is the case material of this watch?
The case and bracelet of the Citizen BY1010-81H are made from lightweight and durable Super Titanium.
Does the watch have a perpetual calendar?
Yes, the Citizen BY1010-81H includes a perpetual calendar function, which automatically adjusts for different month lengths and leap years.
What is the size of the watch case?
The Citizen BY1010-81H has an approximate case diameter of 43mm, making it a prominent yet comfortable size for most wrists.
What special features does the dial offer?
The grey dial of the Citizen BY1010-81H features an analog display, a moonphase indicator, world time, and luminous hands and markers for readability.

REVIEWS

—(0 reviews)

No reviews yet — be the first to review the Citizen Eco-Drive Tsuki-yomi Super Titanium Radio Controlled Grey Dial BY1010-81H 100M Men's Watch.

SHOP SIMILAR

View all →
Casio Standard Analog Stainless Steel Black Dial Quartz MDV-107D-3 200M Men's Watch

Casio Standard Analog Stainless Steel Black Dial Quartz MDV-107D-3 200M Men's Watch

$86.25
Casio G-Shock Analog Digital Black And Gold Color Resin Strap Quartz GA-2100GB-1A 200M Men's Watch

Casio G-Shock Analog Digital Black And Gold Color Resin Strap Quartz GA-2100GB-1A 200M Men's Watch

$136.85
Citizen Eco-Drive Garrison Super Titanium Black Dial BM8560-29E 100M Men's Watch

Citizen Eco-Drive Garrison Super Titanium Black Dial BM8560-29E 100M Men's Watch

$263.35
Citizen Promaster Rubber Strap Blue Dial Automatic Diver's NY0129-07L 200M Men's Watch

Citizen Promaster Rubber Strap Blue Dial Automatic Diver's NY0129-07L 200M Men's Watch

$256.45