Casio has listed the Casio Ring Watch in the US. This is basically a Casio watch in the form of a ring. Expect to pay $120 for the device when it launches in the US next month. Smart rings like ...

Similarly, the build relies on tiny proximity sensors from STM to fit in the “ring” form factor. It’s all wrapped up in a 3D-printed enclosure that fits snugly on the user’s finger.