CASIO Sauna Watch SAN-100H-1BJR New, Unused Domestic official model, with tag This is a wristwatch for sauna enthusiasts, the "Sauna Watch." It features unique functions and design for safe use in high-temperature and high-humidity environments. You can switch between sauna mode and normal time mode with a single button. Even those who lose track of time in the sauna can easily use the 12-minute timer in sauna mode. Additionally, the simple dial and hands coated with luminous paint allow you to check the time even in a dark sauna room. It has heat and moisture resistance, allowing for safe wear in saunas up to 100°C, and the heat-resistant battery makes it difficult for heat to reach the temperature-sensitive internal components. Furthermore, the exterior parts use resin to avoid burns, and the only metal screw is designed not to touch the skin. Resin that is resistant to moisture is used to prevent moisture from entering the watch's interior. The curl band, inspired by sauna locker keys, allows you to subtly feel the sauna even in everyday life. CASIO Sauna Watch SAN-100H-7BJR 15.0 Released October 17th, 2025 5-bar water resistance October Brand: CASIO