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 other watch with a black super titanium (proprietary) case, finished with duratect (dlc on cb3045). It measures 39.0 mm across, 9.7 mm thick, 93 g, and is water resistant to 100 m. Inside is the Citizen H128 eco-drive radio-controlled (multi-band) movement, with Solar (about 2 years power-save) power reserve. Complications: Perpetual calendar, Worldtimer. Priced from $638 (approx; CB3045-61L (black DLC) approx $816). Brand origin: Japan.

Titanium and ceramic other watchesTitaniumBlackUnder $5,000
Reference
CB3040-56H
Type
Other
Price
$638 · approx; CB3045-61L (black DLC) approx $816
Case diameter
39.0 mm
Thickness
9.7 mm
Lug-to-lug
–
Water resistance
100 m
Weight
93 g
Origin
Japan
Movement
Eco-Drive radio-controlled (multi-band)
Caliber
Citizen H128
Power reserve
Solar (about 2 years power-save)
Complications
Perpetual calendar, Worldtimer
Material
Titanium
Grade / type
Super Titanium (proprietary)
Colour
Black
Hardness
–
Construction
–
Surface treatment
Duratect (DLC on CB3045)
Caseback
–
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)
Lume
–
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: Two Broke Watch Snobs / IPPO Japan (maker spec) Maker / listing ↗
Facts are free to cite with a link.
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Alternatives to the Citizen Attesa ACT Line (CB3040 / CB3045, Super Titanium)

SeikoAstron GPS Solar (SSJ027)$2,20041.2 mm12 mm thick110 gOthersame category · same style · shared complications · similar size
SeikoAstron GPS Solar Dual-Time Sport SSH117$2,30043.1 mmOthersame category · same style · shared complications · same movement
SeikoAstron GPS Solar (SSH157)$2,50043.3 mm13.4 mm thick117 gOthersame category · same style · shared complications · same movement
KRONOSTIAtlas GMT$20941.0 mm13 mm thickOthersame category · same style · shared complications · similar sizeKRONOSTI Deep Explorer 24HKRONOSTIDeep Explorer 24H$26941.0 mm13 mm thickOthersame category · same style · shared complications · similar size
Montblanc1858 Geosphere 42mm Titanium (strap)$6,55042.0 mm12.8 mm thickOthersame category · same style · shared complications · similar size

More titanium and ceramic watches from Citizen

CitizenThe Citizen A060 Super Titanium (Washi Dial)$3,10040.0 mm12.2 mm thick86 gDress
CitizenThe Citizen A060 Indigo Washi (Super Titanium)–40.0 mmDress
CitizenThe Citizen A060 Washi Dial (Super Titanium)–38.3 mmDress
CitizenThe Citizen A060 Super Titanium (Washi Dial)–38.3 mmDress
CitizenPromaster Land Eco-Drive Radio-Controlled–39.0 mm11.4 mm thick96 gField
CitizenBrycen Super Titanium Chronograph$52543.0 mm102.1 gChronograph

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 black 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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