Product Material: ABS+ diving material Size: 33*18cm Charging port: Type-c Battery capacity: 5000mah Default timing: default 30 minutes automatic shutdown Level 3 Intensity: mild pain, 45 degrees; moderate pain, 50 degrees; high Pain Degree,60 Degree Color: Grey Quantity: 1 Piece Package Contents: 1 Piece* Electric Heated Knee Pads (Battery Included) 1. Heated and Vibrating Massage The heated knee massager has 3 heating levels (113, 122, 140) and 3 types Vibration mode that providesarthritic knee pain relief and injury recovery. The heating function promotes blood circulation and further relieves muscle soreness and cramps. Heated brace wraps can help you relieve joint pain, muscle stiffness, and joint swelling. 2. Pain reliefIt works perfectly with heat therapy and vibration. Helps relieve knee pain and relax stiff, tense muscles around the kneecap. It also stimulates and improves blood flow to reduce stiffness in painful joints. It has a nice gentle stimulating vibratingmassage for your joints. 3. Multipurpose It is not only used for knees, the knee heating pad is equipped with extension straps, which means you can use it to heat your arms, thighs, knees, calves, ankles. Warm your entire body. 4. Easy to use Longpress the button for 3 seconds to start or end work. Secure the machine to the knee/elbow/shoulder position. Then press the temperature key to turn on the heating function, and press it again to adjust the temperature. Press the vibration button toturn on the vibration function, and press it again to adjust the vibration intensity. 5. Exquisite Gift Set Knee Massager is the perfect gift choice for your family, friends, teachers, loved ones, Valentine's Day, Mother's Day, Father's Day and more.Show gratitude and care for those you love.