All-round knee protection, fast heat compress Vibration massage : Targeting the 4 core muscles group of knees. The electric knee brace combines with vibration massage and far-infrared heat therapy perfectly. Helps to relax the knees, relieve muscle tension, stimulate blood circulation, promote metabolism, improve muscle tissue stiffness, reduce knee rheumatic arthritis knee pain and joint inflammation. Keep knee warm in seconds, and further relieve muscle soreness and cramps Heating function: Five-speed intelligent temperature control adjustment (40°C-55°C). You can choose this device to alleviate your knee discomfort. It heats up quickly, delivering deep thermal energy to your knee without harming your skin. More techniques: Up to 5 various massage technique. Powerful massager with 5 vibration modes, a fantastic way to help recover from pain, which is non-invasive and drug-free pain relief for your knee, no side-effect on people. More POWERFUL RECHARGEABLE BATTERY: Come with 2000mAh power bank, which offers unmatched power to the heating knees pads, It can work lasts up to 3-5 hours with full charge. You can move about while the soothing heat relieves aches and pains.