Features： 1、3D RESONANCE TECHNOLOGY: Knee massager adopts 3D around the knee type three dimensional massage, accurate massage of the important points of the knee, covering more massage area, release pressure, adjust the knee subhealth que state. 2、HIGH FREQUENCY VIBRATION: Knee heating pad using 7000r/min high frequency vibration, 3 levels of strength selection, experience from shallow to deep relaxation state, to adapt to the different state of the massage strength needs. 3、HEAT TECHNOLOGY: Heated knee brace through NTC temperature control large area heat, isothermal and equal frequency penetration heat transfer, deep penetration of subcutaneous tissue, deep release pressure, revitalize the knee. 4、MASSAGE FUNCTION: Heated knee brace wrap with point design, massage more targeted, internal with mugwort bag placement bag, can be used freely with, mugwort heat deep penetration, to help maintain the knee (shipped without mugwort bag). 5、STRONG ENDURANCE: Long endurance, continuous knee care, scientific advice for 15 minutes a day, HD screen, simplified button, with an extension belt, adapt to multiple joints such as the household elbow and knee. 6、 FIT: Knee heating pad 360 degree seamless fit, all kinds of leg types can be used, the use of high elasticity and flexible fabric, greatly enhance the fit and comfort, compatible with different leg types. Specification： Item Type: Knee Massager Material: ABS Battery Type: Lithium ion battery Battery Capacity: 1600mAh (shipped with built in battery) Temperature Range: 40℃ 45℃ 50℃ 55℃ 60℃ Massage Strength: Blue color light soft massage, green light soothe imitation of manual massage, white light strong high frequency empty space top pressure massage Working Time: The product is turned on by default 20 minutes, within 20 minutes to switch the heating temperature or vibration mode are to the time to shut down, all functions are suspended, lights and shut down. Function: 3D vibration, constant temperature hot compress Effect: Improve joint pain, knee pain, knee cold, sports fatigue, etc. Package List： 1 x Massage Knee Pads 1 x Strap 1 x USB cable 1 x English manual