Two-in-one heating and massage, three-level heating (maximum temperature 75C), three vibration modes for your choice, you can enjoy these three functions at the same time or separately. The heating function promotes blood circulation, further relieving muscle pain and spasms. Helps reduce joint pain, muscle stiffness and joint swelling. It adopts an environmentally friendly and low-consumption 5000mAh large-capacity lithium battery. It can be charged for 3 hours and has a long battery life. When the heating and vibration are turned to the third gear at the same time, the battery lifecan reach 90-120 minutes. Equipped with a digital display controller, touch screen button design, the panel displays temperature and power, you can use the controller to control the temperature and vibration mode, the operation is simple and convenient. In the off state, press and hold the button for 1.5 seconds to enter the standby mode, and shut down after 5 minutes without any action. Made of comfortable high-quality ABS+ neoprene, this heated knee massager is an ideal Christmas, Mother's Day, Father's Day or Thanksgiving gift for mom, dad, parents or friends. Power: 7.5w Heating Temperature: 45-75C Material: ABS + Neoprene Color: Black, Gray(optional) Size: 23 x 17.8 x 8cm Weight: 500g Package List: 1 x Heated Knee Pad