1. To remove the tank, apply negative pressure using the five vacuum negative pressure gears. 2. Constant temperature hot compress, 8 red lights + 8 magnets, deep red light penetrating the texture 3. Wireless portable, 1800mah large-capacity battery, can be used for 100 minutes when fully charged One-button touch screen start, five-speed selection, Power: 5V Energy: 7WB 1800mAh battery capacity 3 hours or so for charging Temperature of red light: 36 to 45 degrees Five gears.