■ Brand New, Unopened Color: Black Ships via Yu-Packet Plus. CASIO Sauna Watch SAN-100H-1BJR This is a waterproof CASIO sauna watch, perfect for saunas, hot springs, bedrock baths, and public bathhouses. With a unisex design, it's easy to use, and the simple dial offers excellent visibility! It has a timer function, making it very convenient for managing sauna and bathing times. Guaranteed for use up to 100°C, within 15 minutes while worn on the wrist. The SAN-100H specifications are approximately 40.2 x 35.4 x 12.9 mm, with a weight of approximately 25 g. Model Number: SAN-100H-1BJR Unisex, for both men and women Waterproof specification, reset & mode function Sauna Watch Men's Wristwatch CASIO Sauna Watch SAN-100H-1BJR 15.0 5 ATM Water Resistance, October 2025 Brand: CASIO