Features 1. Heating & Vibrating Massage relieves Knee Pain: the knee brace wrap has 3 Heating and vibrating levels(45-50-60 ), provide for arthritis knee pain relief and injury recovery. Heating function boosts circulation; further relieve muscle soreness and cramps. Help reduce joint pain, muscle stiffness and joint swelling. 2. Fast Heating in Seconds: knee massager ensure knees fully enjoy the massage heating effect. The vibration massage and heating knee brace can be controlled individually or you can enjoy the two functions at the same time. 3. Comfortable Material: knee massager is made of upgrade diving materials, warm material, fast heating and durable for use. 4. Comes with usb charger, plug it into the wall socket to use. Great for use when you're watching TV or reading a book on the sofa at home. 5. Ideal Christmas or holiday gift for your family and friends, it provides sufficient heat and relief for those suffered from chronic knee pain, meniscal tear and muscular aches. Specification Material: ABS, Diving fabric Size: 18 x 13 x 8 cm Color: Black Weight: 470 g Battery capacity: 5000 mAH Third gear temperature: 45-50-60 Endurance: 2 hours Rated voltage: 5 V Rated power: 7.5 W Package Included: 1 x Heated Knee Massager 1 x USB Charger