Oceanus

Identity and scope

Oceanus is Casio's premium analogue watch brand and collection.

This guide treats that identity as the starting point. It does not transfer line-level history to an individual watch without matching reference evidence. 1

Historical position

Casio dates the first Oceanus OCW-500 full-metal radio-solar chronograph to November 2004.

The date and context belong to the event described, not automatically to every object bearing the name. 1

What the source establishes

The cited Casio record is the evidence anchor used here for Oceanus. Its documented scope is narrower than a complete corporate, calibre, or model archive.

Where the source speaks for the brand, its historical statements remain attributed rather than converted into independent verification. 1

Identify the exact watch

Record every visible dial signature, the complete case-back reference and serial markings, movement or module markings, dimensions, materials, and complications. Compare those details with a dated catalogue, manual, archive extract, or service document for the exact reference.

A shared logo or broadly similar case is an identification lead, not proof of age, originality, or authenticity. 1

Keep entities and dates separate

Use 2004 only in the documented context described above. Names may survive ownership changes, disappear and return, or refer to a founder, historic maker, product line, and present operator at different times.

Build an object-level chronology before making continuity claims. 1

Research an Oceanus watch

Start with clear photographs of the dial, case back, crown, clasp, and movement where safely accessible. Search the exact markings in primary documentation and retain the document date and page or section.

For authentication, servicing, or valuation, use a qualified specialist and preserve provenance, invoices, and prior service records. 1

Independent research update

OCEANUS is a premium all-analogue watch collection/brand of Casio.

Casio launched OCEANUS in 2004 with the OCW-500 full-metal solar radio-controlled chronograph.

Current OCEANUS models combine Casio electronic modules with premium analogue cases and finishing; exact technology varies by reference. 243