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.

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

Does it work? Don’t know about this watch, but this was done to another classic Casio watch and tested to 1200 psi. That’s a kilometer underwater, and the watch still worked afterward.