The small pearl-dial Oceanus has the cleaner face of the pair

I like how much simpler this small Oceanus looks next to the chronograph. The white mother-of-pearl has room to show itself, the blue hands are easy to pick out in the official photographs, and the bracelet suits the case. It is an attractive little watch. The 29.7mm width would make it a very different wearing proposition from the watches I usually choose.

This is the OCW-S40PW-7AJF, the smaller half of Casio's new white Oceanus Manta pair. It shares the larger watch's general color idea, but I wouldn't describe it as the same watch scaled down. The layout and features are different enough that each deserves its own look.

A compact, light three-hander

The stated dimensions are 33.8mm long, 29.7mm wide and 8.7mm thick, with a weight of 44g. Casio lists a titanium case and solid titanium bracelet. The sapphire bezel ring is colored pearl white, surrounding a natural mother-of-pearl dial with blue accents. Sapphire glass with anti-reflective treatment on both sides covers the face.

I like the relatively open center of the dial. The date at three takes up very little space, and the applied hour markers give the light surface some definition. There are still city names around the outside, so it isn't a completely plain watch. I would want to check those details in person rather than rely on a bright product render to judge how busy it feels.

The small dimensions are not a reason to dismiss the watch automatically. I have liked other small designs when the complete package works. For myself, though, I would want to see whether this case looks intentionally compact or simply too small on my wrist. The bracelet and the amount of dial visible can change that impression quite a bit.

Solar and radio, without the larger model's Bluetooth

Casio lists Tough Solar, Multiband 6 radio correction, world time and 100m water resistance. The S40 does not list Bluetooth, which is a useful distinction from the S7000 chronograph. It still offers automatic radio correction in supported regions, so losing phone connectivity does not mean it is a basic manually set quartz watch.

The bracelet has a fine-adjustment system. Comfort and the quality of that adjustment remain hands-on questions for me. The 44g specification is encouraging, but a number doesn't tell me whether the clasp feels right or the links pull hair.

As of November 3, 2026, the Japanese official price is ¥198,000 including tax, with November 13 given by Time Station NEO for the local release. Confirmed US pricing and US availability remain unknown.

I give it 82 out of 120 bezel clicks. The pearl dial and blue hands work, and I like the practical solar/radio specification. I would try this beside the 42.8mm chronograph because the smaller case could completely change which one feels right.