This is the "Sa-dokei" (Sauna Watch), a wristwatch specially made for sauna enthusiasts. This is a new product. * 5-bar water resistance * Usable environment: Sauna up to a set temperature of 100°C (use within 15 minutes while worn on the wrist) * 12-minute timer * Battery life: Approximately 5 years\* * Monthly accuracy (at normal temperature): ±15 seconds * Mineral glass * Case/Bezel material: Resin * Case size (height x width x thickness): 40.2 x 35.4 x 12.9mm * Weight: 25g