Casio is expanding its tiny CRW-H001 Ring Watch with a handful of smart features, turning the retro-inspired ring-finger watch into more than a novelty gadget. The updated model keeps the unusual watch-on-a-ring concept while moving closer to the growing smart ring category.

The biggest additions are health-related tools, including heart-rate monitoring and blood-oxygen tracking. Those features position the Casio Ring Watch as a possible alternative for shoppers looking at devices from brands such as Oura and Samsung, but who may prefer a different form factor and a more visibly watch-like design.

What makes the CRW-H001 stand out is its blend of old-school Casio styling and compact wearable tech. Instead of the minimalist look common in many smart rings, this device appears to lean into a tiny digital-watch aesthetic, which could appeal to buyers who want something more playful and recognizable.

With these new functions, Casio seems to be testing how far it can push a small wearable beyond simple style. The result is a niche but intriguing option in the smart wearables space, combining ring-size portability with basic wellness tracking and a distinctive retro look.