Casio's Oceanus watch brand has released its popularity ranking for 2025. Known as a full-metal multi-function watch, the Oceanus features elegant design and cutting-edge technology, making it versatile enough to be worn for both business and casual occasions. Which models sold the most in 2025?
Text by Tsubasa Nojima
[Article published on January 19, 2025]
Top 5 Popularity Rankings for Oceanus
The Casio Oceanus was launched in 2004 as the world's first dual-time, full-metal chronograph radio-controlled solar watch. For Casio, which had already established a major presence with G-SHOCK, this was also its first watch to showcase elegance. While the Oceanus boasts an elegant design, as its brand name, derived from Oceanus, the Greek god of the sea, suggests, it also embodies the cutting-edge spirit of Casio, which has produced a string of unconventional, innovative watches. Since its launch, the Oceanus has continued to evolve for over 20 years, increasing its presence in the watch market.
The Oceanus is equipped with convenient features such as radio wave reception and Tough Solar, but recently released models have been further enhanced with a Mobile Link function that allows you to connect to your smartphone via Bluetooth and use a dedicated app to automatically adjust the time, set world time, and check the watch's status. On the exterior, the watch is also endowed with specifications befitting a luxury watch, such as a refined dial, sapphire crystal bezel ring, and Zaratsu polishing.
So what models of Oceanus will attract attention in 2025? We will reveal the top 5 based on the brand's sales data.
5rd place: "OCW-S400RA-2AJF"
A simple three-hand model. It features a retro color scheme with muted tones. A green dial model is also available. Tough Solar. Approximately 19 months on a full charge (in power save mode). Ti case (41.3mm diameter, 9.2mm thick). Water resistant to 10 bar. Price: 181,500 yen (tax included).
This simple three-hand Oceanus, a new model for 2025, features a semi-matte blue gradient dial and a retro design. The combination of bar indexes, pencil-shaped hour and minute hands, and a date display at 3 o'clock create a calm look suitable for business settings.
The bezel, which features city names, is set with a luxurious sapphire crystal ring. The top surface has been laser-etched to create a semi-matt finish, which harmonizes with the dial.
The titanium case is thin, measuring just 9.2mm thick. Its slim size means it won't get in the way of your shirt cuffs. The crown guard gives it a slightly sporty look. The titanium bracelet features a design incorporating arrow-shaped links and is finished with a hairline finish to match the case. The case and bracelet are treated with titanium carbide to improve wear resistance and color development.
4th place: "OCW-T2600-1AJF"
A long-selling model that has been on the market for 10 years. It features the elegant, sporty design that is characteristic of Oceanus. Tough Solar. Approximately 22 months on a full charge (in power save mode). Ti case (42.8mm diameter, 10.7mm thickness). Water resistant to 10 bar. Price: 11 yen (tax included).
Released in 2015, this long-selling model remains highly popular to this day. Its appeal lies in its clean, smooth bezel and refreshing blue dial.
This is a multi-hand model with a sporty design. The blue-rimmed sub-dials and city name displays around the dial allow for functions such as a stopwatch, world time, and full auto-calendar. Another feature of the Oceanus is that it is equipped with a Tough Solar solar power generation system, radio wave reception, and is essentially maintenance-free.
The titanium case features a crown guard for a bold design. The wide push buttons are low-profile and designed to prevent them from catching on clothing. The titanium bracelet is a three-link type with a hairline finish. The buckle is equipped with a slide adjustment mechanism that allows for fine adjustment in three stages with one touch without the need for tools, allowing adjustment to suit the weather or your physical condition. The case and bracelet have been hand-polished by artisans using Zaratsu polishing and treated with titanium carbide to increase the surface hardness, enhancing the texture.
3rd place: "OCW-S7000RA-2AJF"
This 2025 model features a classic color scheme. The refreshing blue gradient dial and bold design make it perfect for both work and play. It features Tough Solar technology, approximately 19 months of battery life on a full charge (power save mode), a Ti case (42.8mm diameter, 9.5mm thick), and 10 bar water resistance. Priced at 214,500 yen (tax included).
This is a multi-hand model of the OCW-S400RA-2AJF introduced in 5th place. It has a classic style theme, with a blue gradient dial and a semi-matt sapphire crystal bezel ring.
The three-eye vertical layout of the subdial is given a three-dimensional finish by attaching a ring. City names are printed on the flange, and the bezel features a tachymeter that can measure speed when used as a stopwatch.
The sporty case, with its sharp lugs, crown guard, and polygonal bezel, is made of titanium, making it lightweight and easy to handle. The titanium bracelet, made up of arrow-shaped links, also has an edgy design that harmonizes with the case. The push-button buckle features a slide adjustment mechanism that allows for easy fine-tuning of the wrist, making it easy to use.
It is equipped with a radio wave reception function, Tough Solar, and a mobile link function that allows time correction and setting by connecting to a smartphone.
2nd place: “OCW-S7000B-2AJF”
This model combines a blue-to-black gradation dial with an all-black exterior made with DLC processing. The bezel is fitted with a sapphire crystal ring. Tough Solar. Approximately 19 months on a full charge (in power save mode). Ti case (diameter 42.8mm, thickness 9.5mm). Water resistant to 10 bar. Price: 236,500 yen (tax included).
This model features a dreamlike color scheme reminiscent of the sea at night. The dial is coated with a blue-to-black gradient vapor deposition, and the bezel with a tachymeter is set with a lustrous sapphire crystal ring.
The dial is a typical Oceanus design that combines style and practicality. The inner dial has a black ring and a three-dimensional Oceanus emblem at the 3 o'clock position.
The case and bracelet are made of lightweight, corrosion-resistant titanium, with a black DLC finish. The bracelet features the distinctive OCEANUS design with arrow-shaped links and is equipped with a slide adjustment mechanism that allows for fine adjustment of the wrist size with a single touch.
As you'd expect from an Oceanus, it's packed with features. Despite its slim case, it boasts a wide range of functionality, including mobile link, radio wave reception, Tough Solar, world time, stopwatch, and full auto calendar.
1st place: "OCW-S7000D-7AJF"
This model is typical of Oceanus, featuring refreshing coloring. Its multifunctionality, including mobile link and radio wave reception, is also appealing. Tough Solar. Approximately 19 months on a full charge (in power save mode). Ti case (42.8mm diameter, 9.5mm thickness). Water resistant to 10 bar. Price: 198,000 yen (tax included).
This multi-hand model features a refreshing white and blue coloring that evokes the ocean, the theme of the Oceanus. The white of the dial is vividly finished with an opaque white paint on the back and a silver vapor deposition and clear matte finish on the front. The inset dial is decorated with a transparent blue vapor deposition, allowing you to enjoy the contrast with the white. The reason this model is able to achieve such an intricate dial is because of the structure in which a highly efficient power-generating solar cell is placed below the inset dial.
The bezel features a tachymeter scale in white lettering, and the combination of a ring-shaped sapphire crystal and blue vapor deposition creates a highly transparent appearance, reminiscent of a clear ocean.
The titanium case and bracelet are treated with titanium carbide to improve wear resistance and color development. The mirror finish is Zaratsu polished, allowing you to enjoy its distortion-free shine. The case is just 9.5mm thick, giving it a clean impression.
