Features: Multifunctional: Multifunctional heating vibration massage knee pads, red light heating + vibration massage combination, gentle care of your shoulders, elbows and knees. Pain Relief: It can be used for warmth and hot compress therapy, which can effectively relieve muscle soreness and cramps, relax muscles, reduce stress, relieve fatigue, and promote blood. 2 in 1 Design: 3-level heating ,three vibration modes for you to choose. You can enjoy both functions at the same time or separately. USB charging: The built-in 4000mAh large-capacity rechargeable-battery allows you to enjoy a comfortable massage anytime, anywhere. Suitable for Indoor and Outdoor: The knee heated brace can be taken anywhere (it’s 100% portable), you can use it whenever you want like working in the office, doing housework at home or exercising outdoors. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: diving material Rated voltage: 5V Rated power: 7W Battery capacity: 4000mah Battery life: 110 minutes at the highest temperature Heating temperature: 45-55-65 degrees Package List: knee pad*1, long strap*1, short strap*1, USB cable*1, instruction manual*1, color box bag Package List: 1 Set Knee Massager