Thank you very much for viewing. Casio Watch Casio Collection [Domestic Genuine Product] Sauna Watch SAN-100H-1BJR Black, brand new and unopened. This is a Casio sauna watch with waterproof specifications, perfect for saunas, hot springs, bedrock baths, and public baths. With a unisex design that is easy to use and a simple dial for excellent visibility! It has a timer function, making it very convenient for managing sauna and bathing times. The specifications of the SAN-100H are approximately 40.2 x 35.4 x 12.9 mm, with a mass of approximately 25 g. Model number: SAN-100H-1BJR Unisex, for both men and women Waterproof specifications, reset & mode function Sauna Watch Color: Black Introducing the "Sauna Watch" from CASIO, specially made for sauna enthusiasts. [5-atmosphere water resistance] Equipped with 5-atmosphere water resistance. [Usable environment] Sauna up to a set temperature of 100°C (use within 15 minutes while wearing on the wrist) 12-minute timer