The Wristwatch Field Guide

Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium)

CB3040-56H

The Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium) is a current-production watch with a super titanium (proprietary) case, finished with duratect (dlc on cb3045). At 93 g it sits around the middle for watches in the guide, and is priced well under the $1,500 median across the guide. It ships on a matching exotic-material bracelet rather than a strap.

All Citizen watchesExotic-material other watchesTitaniumBlackUnder $5,000
Price
$638
Material
Titanium
Grade / type
Super Titanium (proprietary)
Weight
93 g
Water resistance
100 m
Reference
CB3040-56H
Type
Other
Case diameter
39.0 mm
Thickness
9.7 mm
Origin
Japan
Movement
Eco-Drive radio-controlled (multi-band)
Caliber
Citizen H128
Power reserve
Solar (about 2 years power-save)
Complications
Perpetual calendar, Worldtimer
Colour
Black
Surface treatment
Duratect (DLC on CB3045)
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Super Titanium bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Metallic; deep blue (DLC)
Dial colours
Blue
Availability
Offered
Status
Current
Not published
Lug-to-lug, Hardness, Construction, Caseback, Lume
High confidence Verified Jul 2026 Source: Two Broke Watch Snobs / IPPO Japan (maker spec)
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Frequently asked questions

What is the case material of the Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium)?

The Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium) has a super titanium (proprietary) case. This is confirmed against the maker spec.

What size is the Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium)?

It is 39.0 mm in diameter, 9.7 mm thick, and water resistant to 100 m.

How much does the Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium) weigh?

About 93 g.

How much does the Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium) cost, and is it available?

It is current-production and lists from $638.

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