Product Description Material: ABS+diving material Size: 33 * 18 cm Charging interface: Type-c Battery capacity: 5000mah Default timing: automatic shutdown in 30 minutes by default 3 levels of strength: mild pain, 45 degrees; moderate pain, 50 degrees; high pain, 60 degrees color: gray Quantity: 1 piece Package content: 1 piece * Electric heating knee pad (with battery) 1.Heating & Vibration Massage Heated knee massager has 3 heating levels (113, 122, 140) levels and 3 vibration modes, providing arthritic knee pain relief and injury recovery. The heating function can boosts circulation, further relieves muscle soreness and cramps. Heated brace wrap can help you relief joint pain, muscle stiffness and joint swelling. 2.Relief the pain It combines perfectly with heat therapy and vibration. Helps relieve pain in the knee joints and relax the stiff, tense muscles around the kneecap. It could also stimulate blood flow and improve blood flow to reduce stiffness in sore joints. It has a nice gently stimulating vibrating massage for your joint. 3.Multi-PurposeIt is not only used for knees, Knee Heating Pad is equipped with extension straps, which means you can use it to heat your arms, thighs, knees, calves, ankles. Warm your whole body. 4.Easy to UseLong press the button for 3 seconds to start or end the work. Fix the machine at the knee/elbow/shoulder position. Then press the temperature button to turn on the heating function, press it again to adjust the temperature. Press the vibration button to turn on the vibration function, press it again to adjust the intensity of vibration. 5.Delicate Gift SetKnee Massager is your perfect gift choice for Valentine's Day, Mother's Day, Father's Day, for families, friends, teachers, beloved ones, and more. Show gratitude and care for people you love.