Digital display constant temperature portable wet tissue heating box. Divided into four gears, the four gears are represented by 40°C/45°C/50C/55°C/ displayed on the screen. After the product is connected to the power supply, the screen lights up and displays and enters standby mode. Press and hold the power button to turn on the heating function of the product, which will enter the first level of 40°C heating by default. Click button to adjust the heating level Press and hold the power button to turn off the heating function and then enter the standby state, and the screen will display. Made in China.