The Titanium Field Guide

Casio Oceanus Classic OCW-T4000

OCW-T4000-1AJF

The Casio Oceanus Classic OCW-T4000 is a 42.8 mm titanium watch with a Casio 5652 solar quartz movement. The case is surface-hardened, which guards against the scuffs bare titanium picks up.

All Casio watchesOther watchesUnder $1,000LightweightLightest, rankedSolar
Price
$600
Material
Titanium
Grade / type
Titanium (hard coating)
Weight
90 g (with bracelet)
Water resistance
100 m
Reference
OCW-T4000-1AJF
Type
Other
Case diameter
42.8 mm
Thickness
11.9 mm
Origin
Japan
Movement
Tough Solar, Multi-Band 6, Bluetooth
Caliber
Casio 5652
Complications
Date
Colour
Grey
Surface treatment
Hard-coated titanium
Finish technology
Surface hardening
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Titanium
Crystal
Sapphire
Display back
No
Dial
Black
Dial colours
Black
Lume
Neobrite
Availability
Offered
Status
Current
Not published
Lug-to-lug, Power reserve, Hardness, Construction, Caseback, Matching bracelet
Medium confidence Verified Sep 2026 Source: Casio Maker ↗ Spec checksGrade Jun 2026Price Jun 2026Weight Jun 2026
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Casio Oceanus Classic OCW-T4000?

Titanium, with no grade stated. The record is at medium confidence, so check the maker's page before relying on it.

What size is the Casio Oceanus Classic OCW-T4000?

The case is 42.8 mm across and 11.9 mm thick. It is water resistant to 100 m.

How much does the Casio Oceanus Classic OCW-T4000 weigh?

About 90 g on its bracelet.

How much does the Casio Oceanus Classic OCW-T4000 cost, and is it available?

It is in production, at a list price of $600.

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