The Casio Sadokei is a watch you can wear in the sauna

Casio's Sadokei watch can withstand temperatures of up to 100 degrees celcius, reports The Yomiuri Shimbun, but they don't want you to swim in boiling water. It's for the sauna. The battery is heat-resistant and encapsulated within a water-resistant resin, and it comes with a stretchy band that looks like an old-timey phone cord. It comes in black and white; "Sauna mode" sets it to lock the small hand and revolve the big hand in 12 minutes, perfect for a quick steam bath.

It comes in black or white with various phone-cord strap options.

Casio crowdfunded the launch last year and sold out 2,200 watches in nine minutes.

Previously:
Casio watch ring looks wonderfully ridiculous, but is sadly non-functional
New Casio desk clock is a giant version of an old wristwatch
Casio's 1972 calculator is now a 2024 wristwatch
Retro Casio watch has a few smart features