Product material: ABS+ diving fabric.Rated voltage: 5V. Rated power: 7.5W.Charging method: usb charging. Battery capacity: 5000 mAh.Heating temperature: 45-50-60 degrees. Product gear: third gear. Battery life: one week.Product function: vibration massage, heating and hot compress.Features:3 heating modes (45C/50C/60C) and 3 vibration intensity options to meet the needs of massage intensity in different states;Far infrared heating, knee pad heating technology. The heat released by far infrared can quickly penetrate into the subcutaneous tissue to effectively relieve pain, with long service life, faster heating and more uniform heating;Wireless charging: Built-in 5000MAH rechargeable battery, after fully charged, you can massage your knees while walking, and the battery life can last for a week;Multifunctional: The massager is also equipped with a 58CM extension belt, which can not only massage the knees, but also massage the elbows and shoulders;Easy to use: long press the button for 3 seconds to start or end work. Fix the machine on the knee/elbow/shoulder position, then press the temperature key to turn on the heating function, and press again to adjust the temperature. Press the vibration key to activate the vibration function, and press it again to adjust the vibration intensity.