Electric heating knee pads hot compress moxibustion fever knee pads elderly knee warm protective gear1. Relieve knee pain associated with arthritis, bursitis, strains, sprains, and meniscal tears; 2. Built-in mesh bag, which can be placed in ice packs for cold compresses, or moxa bags for moxibustion; 3. It can be adjusted and secured in place with two split straps and hook and loop closure. It can also be used on calves, thighs and arms to relieve muscle pain and cramps; 4. 1 button control and 3 heating settings, the operation is very simple, you can fully control the heating temperature and time;5. The USB data cable is easy to carry, and can be plugged into any power supply with a USB interface, which is convenient to use.Product material: diving cloth Product color: black1. When using USB to plug into the USB port to obtain power, the output is about 5V/DC: Highest (red): The temperature is 50C, high temperature, and can be used for a long time; Medium (white): the temperature is 45, warm and can be used for a long time; Lowest (blue): The temperature is 40C, neither hot nor cold, and can be used for a long time. PS: If you connect it to a power bank whose output current is higher than 500mA, the temperature may be higher than the above temperature.2. When using an adapter, the fixed output is 7.9V/DC: Highest (red): temperature 65C, high temperature, recommended use time 10 minutes; Medium (white): the temperature is 55C, relatively hot, and the recommended use time is 30 minutes; Lowest (blue): temperature 45C, warm and can be used for a long time.