Instant purchase welcome CASIO Sauna Watch SAN-100H-1BJR Brand new, unopened Black The Sauna Watch is a wristwatch created specifically for saunas. It features a 12-minute timer function that allows you to switch between "Sauna Mode ⇄ Normal Time Mode" with a single button, making it easy to intuitively manage your time in the sauna. It's designed to withstand temperatures up to 100°C, with a waterproof case and a condensation-resistant structure made of resin, ensuring it can be used safely in a sauna environment. With its simple operation and intuitive button layout, you can focus on your sauna time without unnecessary stress. Model number: SAN-100H-1BJR Unisex, for both men and women Waterproof specifications, reset & mode function