USB Heating Eye Mask Fatigue Hot Compress Eye Mask Washable Eye Mask Features: Take out the USB plug, connect to the 2A of the power bank, open the power bank, press the key to turn on the heating, The gears are divided into: high-grade, mid-grade, low-grade, and off. Press the timer button to turn on the heating timer function. The timer can be divided into: 60 minutes, 45 minutes, 30 minutes and automatically turn off. The 3rd gear temperature is from low to high, the first gear temperature: 25°C; the second gear temperature: 35°C; the third gear temperature: 45°C. Precautions: 1. It should not be used by people who cannot take of themselves, babies or people who are not sensitive enough to heat. 2. Do not scratch the heating cloth with a needle bayonet knife, and use it strictly when there is no indoors. 3. Do not use in wet conditions, please dry before use Specifications: Product voltage:5V/1A Product size:About 20.5 * 9.5cm (without elastic band) Heating gear: 25°C-45°C packing list: 1 X Eye Mask