Features: 1.Multifunctional heating massage knee pads, vibration massage + hot compress +Red Light Irradiation, gently care for your knee joint health. 2.360 all-round wrap around the knee, covering and massaging more acupoints, effectively releasing the pressure on the knee. 3.High frequency vibration massage . Simulate the real massage technique, the massage effect is better, and the use feeling is more comfortable. 4.Constant temperature hot compress (45C/55C/65C), 3 temperature adjustment, take care of your knee joint with the most suitable temperature for you, relieve knee pain and discomfort. Specifications: Input voltage: 5VDC/2A(USB) Rated voltage: 5V Power: 10W Working voltage: 3.7V Lithium battery: 3600mAh Far-infrared lamp beads: 16 Packing size: 27.6*11*19.5cm Band size: 30cm*12cm*14cm Body length: 24cm Packing List: 1* host 1* Wormwood bag 1* Electrode wire 1 pair* patches 1* TYPE-C Charging Cable 1* English User Manual 1* Packing Box Precautions: 1. Before the first use, please fully charge the product (charge for about 2-3 hours). 2. It is recommended not to completely drain the battery before charging. 3. When the power indicator flashes, please charge in time.