All Oceanus watches have the following key characteristics:
- Analog watchface – Note that earlier models have a combined analog and digital watch face.
- Five-motor drive – It consists of five internal motors running independently to control dials for time, stopwatch, seconds, day of week and hours.
- Multi-band – The Oceanus watches will auto-synchronize themselves if one visits Europe, North America, Japan, or China. Synchronization locations are the Japanese time signal (JJY), the American time signal (WWVB) from Colorado, and the European time signals from both England (Time from NPL), Germany (DCF77) and China in Shangqiu City, China.
- Sapphire crystal – For superior scratch resistance.
Oceanus 600 series
The Oceanus OCW-T600 series wristwatches are the basic Oceanus model on the Japanese market.
The Oceanus CACHALOT series wristwatches are designed for marine sports. They include a rotating bezel and a yacht timer chronograph.
Oceanus 700 series
The Oceanus OCW-M700 was the last model introduced to the American market. It features a complete analog face with no LCD screen as well as the standard characteristics for Oceanus watches. It is unique in the Oceanus line as it includes a subdial to show the status of the ocean tides in the current time zone. It is the only Oceanus model to include this feature.
Oceanus 1000 Series "Manta"
Released on June 1, 2007 and complete with the sapphire crystal and the MULTI-BAND 5 technology, the Manta is the most versatile and the most expensive watch out of all the Oceanus watches with a base price of 100,000 Japanese Yen (approx. $1000 American). It does not include the tide meter that appears on the 700 series. It closely resembles the 600 series watch style but it is thinner than both the 700 and 600 series watches.
Casio Oceanus watches are only available in Japan. They can be ordered online and shipped internationally.
In the USA the Oceanus line has been discontinued for the Casio Edifice line.