p Features: The massager has fully enveloping airbags (inner side and straps) to squeeze, cyclically inflate and deflate, allowing knees to enjoy air pressure relaxing massage; It combines red light therapy, low-level laser therapy, kneading massage(Air pressure & Vibration), and far-infrared heating therapy into one device, to ensure good treatment efficiency. There are built-in 20 pieces red light physiotherapy lamp beads, specific wavelength far red inner and outer bands penetrate into the knee, to relieve knee fatigue and discomfort; Through vibration, the device can repair and massage the muscles of the knee area to relieve the pressure and let it fully relax; Three heating modes: low range: 45& 8451;±3& 8451; (relieving knee tingling), medium-range: 50& 8451;±3& 8451; (releasing knee tingling), high grade: 55 & 8451;±3& 8451;(Relieve walking pain). The exterior design is 90-degree shape, suitable for the knee, elbow, and ankle pain relief. Intelligent timing design: you are free to choose 15 minutes/20 minutes/25 minutes/30 minutes. One-key start, large screen display, wireless use, simple touch interface, can also be used by the elderly; It is USB chargeable, with a built-in 2600mah lithium battery, fully charged in 3 hours, it can be used for 1-1.5 hours.