Features: The sauna Thermometers is easy to mount on wall, 2 calibrators on the back of the Thermometers, one for adjusting temperature and one for adjusting humidity. The sauna Thermometers and hygrometer adopts a two-in-one, allowing you check the humidity and temperature of the sauna room in time. The sauna accessories is make of clear acrylic light-transmitting board and wood base, resistant to falling, not easy to break. Ensures the scale is clearly visible and easy to read. Our sauna Thermometers with1800mAh battery, it can be used for 4-6 hours after fully charging. It's suitable for hotel, family, sauna indoor temperature and humidity measurement. The displayed temperature of the sauna Thermometers is between 0℃~120℃, which is suitable to measure the moisture content and temperature in the sauna room. Specifications: Material: ABS, Wood Measurement: Temperature: 0℃~120℃ Humidity: 0%~100% Port: Type-C Battery: 1800mAh battery(Include) Working Time: 4-6 hours after full charged Size: About. 20.5x4x22cm/8.07x1.57x8.66in Package Includes: 1 Set Thermometers Hygrometer note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.