CASIO Sauna Watch SAN-100H-1BJR This sauna watch is a wristwatch born for the sauna. It features a 12-minute timer function that can be switched between "Sauna Mode ⇄ Normal Time Mode" with a single button, allowing you to intuitively enjoy time management in the sauna. It has a heat-resistant design that can withstand saunas up to 100°C, a waterproof case, and a fog-resistant structure made of resin to prevent moisture, making it safe to use in sauna environments. With its simple operation and intuitive button layout, you can concentrate on your sauna time without unnecessary stress. Model Number: SAN-100H-1BJR Unisex, for both men and women Waterproof specifications, reset & mode function