Meet the Casio Sa-Tokei SAN-100H-7BJR in clean white, a specialized wristwatch created specifically for sauna enthusiasts. Japan has a passionate sauna culture, and Casio brings its reliable watchmaking expertise to the heat with a timepiece engineered to handle high temperatures and steam.
This quartz watch toggles between standard time and a 12-minute sauna timer with a single button press, so you never lose track of how long you've been in. It's built to be worn in saunas up to 100 degrees Celsius, with wear time capped at 15 minutes per session for safety. The resin case guards against skin burns, the one metal screw is placed away from contact with your skin, and moisture-resistant materials keep the interior from fogging up. A heat-resistant battery also protects the delicate parts inside from temperature damage. It's water resistant to 5 atm as well.
Luminous hands make it easy to read the simple dial even in a dim sauna room, and the coiled band takes its inspiration from classic sauna locker keys, letting you carry a bit of that sauna feeling into everyday life.
This item is listed secondhand, but it is in brand new, unused condition. It was originally purchased at an official Japanese retailer and includes its dedicated box and warranty documentation.
CASIO Sauna Watch SAN-100H-7BJR in white. This Japan domestic authorized model is a battery-powered quartz watch with 5 bar water resistance, heat and humidity resistance, and a 12-minute sauna timer.
Switch between sauna mode and standard time mode with a single button. The simple dial and luminous hands provide visibility in dim sauna rooms. Designed for use in saunas below 100°C, it uses a heat-resistant battery to reduce heat transfer to temperature-sensitive internal components. The exterior is made of resin to help prevent burns, and its only metal screw is positioned away from the skin. Moisture-resistant resin helps reduce internal fogging.
The curl band is inspired by sauna locker keys. New and unused, including the original box, warranty card, and all included accessories. For sauna use, wear on the wrist for no more than 15 minutes.
