The Titanium 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 Super Titanium (proprietary) case, finished with duratect (dlc on cb3045). It measures 39.0 mm across, 9.7 mm thick, 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 other watchesUnder $1,000Under 11 mm thick
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ReferenceCB3040-56H
TypeOther
Price$638 · approx; CB3045-61L (black DLC) approx $816
Case diameter39.0 mm
Thickness9.7 mm
Lug-to-lug–
Water resistance100 m
Weight–
OriginJapan
MovementEco-Drive radio-controlled (multi-band)
CaliberCitizen H128
Power reserveSolar (about 2 years power-save)
ComplicationsPerpetual calendar, Worldtimer
TitaniumSuper Titanium (proprietary)
Surface treatmentDuratect (DLC on CB3045)
Nickel-freeYes
Bracelet / strapSuper Titanium bracelet
CrystalSapphire
Display backNo
DialMetallic; deep blue (DLC)
Lume–
AvailabilityOffered
StatusCurrent
High confidence Verified 2026-06-21 Source: Two Broke Watch Snobs Maker / listing ↗
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