Smart Hot Compress Knee Relaxing Massager Knee Cap Treasure Laser Infrared Elbow Shoulder Massager Relive Joint Pain Stiffness. Features: Multifunctional heating massage knee pads, vibration massage + hot compress +Red Light Irradiation, gently care for your knee joint health. 360° all-round wrap around the knee, covering and massaging more acupoints, effectively releasing the pressure on the knee. High frequency vibration massage. Simulate the real massage technique, the massage effect is better, and the use feeling is more comfortable. Constant temperature hot compress (45°C/55°C/65°C), 3 temperature adjustment, take care of your knee joint with the most suitable temperature for you, relieve knee pain and discomfort. Precautions: Before the first use, please fully charge the product (charge for about 2-3 hours). It is recommended not to completely drain the battery before charging. When the power indicator flashes, please charge in time. Specifications: Input voltage: 5VDC/2A(USB), Rated voltage: 5V, Power: 10W, Working voltage: 3.7V, Lithium battery: 2400mAh, 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