The Casio CRW-001-1JR is a smart ring that not only looks like one of Casio's digital timepieces. It works like one, too.

The watches' calculator function can add, subtract, multiply, and divide up to eight digits. As for watch functions, you get ...

While we're talking about cult classic watches, the Casio Calculator watch deserves a mention. Perhaps best known from its ...

[Matteo] has been a fan of the Casio F-91W wristwatch ... every feature needed in a watch such as an alarm and a timer. And, since it’s been in use since the 80s, it’s also a device built ...