The Wristwatch Field Guide

Citizen Attesa Tsuki-Yomi A-T (Super Titanium)

BY1010-57H

The Citizen Attesa Tsuki-Yomi A-T (Super Titanium) is a current-production other watch with a grey super titanium (proprietary) case, finished with duratect surface hardening. It measures 43.0 mm across, 105 g, and is water resistant to 100 m. Inside is the Citizen H874 eco-drive radio-controlled, moonphase, world time movement. Complications: Day-date, Perpetual calendar, Worldtimer. Priced from $875. Brand origin: Japan.

Titanium and ceramic other watchesTitaniumUnder $5,000
Reference
BY1010-57H
Type
Other
Price
$875
Case diameter
43.0 mm
Thickness
Lug-to-lug
Water resistance
100 m
Weight
105 g (with bracelet)
Origin
Japan
Movement
Eco-Drive radio-controlled, moonphase, world time
Caliber
Citizen H874
Power reserve
Complications
Day-date, Perpetual calendar, Worldtimer
Material
Titanium
Grade / type
Super Titanium (proprietary)
Colour
Grey
Hardness
Construction
Surface treatment
Duratect surface hardening
Caseback
Titanium
Nickel-free
Not verified (clasp or buckle material not confirmed)
Bracelet / strap
Super Titanium bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Moonphase display
Lume
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: Citizen (maker) Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

Similar titanium and ceramic watches

Alternatives to the Citizen Attesa Tsuki-Yomi A-T (Super Titanium)

More titanium and ceramic watches from Citizen

Frequently asked questions

What is the case material of the Citizen Attesa Tsuki-Yomi A-T (Super Titanium)?

The Citizen Attesa Tsuki-Yomi A-T (Super Titanium) has a grey super titanium (proprietary) case with a titanium caseback. This is confirmed against the maker spec.

What size is the Citizen Attesa Tsuki-Yomi A-T (Super Titanium)?

It is 43.0 mm in diameter, and water resistant to 100 m.

How much does the Citizen Attesa Tsuki-Yomi A-T (Super Titanium) weigh?

About 105 g (w/ bracelet).

How much does the Citizen Attesa Tsuki-Yomi A-T (Super Titanium) cost, and is it available?

It is current-production and lists from $875.

All titanium and ceramic Citizen watches · Titanium and ceramic other watches · All 1040 watches

Learn: Titanium vs Ceramic · Ceramized Titanium