Thank you for viewing this product. Casio Sauna Timer Watch Sauna Ikitai Model, Black Brand new, unused. ・Functions: Time display (hour, minute), 12-minute timer (minute, second), reset function ・Water resistance: 5-bar water resistance ・Body size/weight: Approximately 40.2 x 35.4 x 12.9mm (height x width x thickness) / Approximately 24.5g ・Exterior specifications: Resin case (low-permeability resin), resin back cover (low-permeability resin), mineral glass ・Stretch curl band: Urethane resin ・Battery/battery life: Heat-resistant battery / Approximately 5 years ・Usable environment: Sauna up to a set temperature of 100°C (use within 15 minutes while wearing on the wrist) This is a limited edition product only available through crowdfunding in December of last year. Immediate purchase OK. Please note that returns are not accepted after purchase as the item will be delivered unused.