Product Information: 1.Effective Therapy - This leg red light therapy is made of 660 wavelengths red lights and 880 wavelengths lights. The red light reaches the deep layers of the skin, stimulating cell recovery and increasing blood circulation, effectively reducing knee or elbow pain, and accelerating the healing of muscles and ligaments. 2.Timing Function - In the power-on state, the timing button can set the fixed working time of the LED light, and the timing time can be set to 5/10/15/20/25/30 minutes in turn. After the setting starts, a countdown will appear on the screen. You can set the lighting time according to your needs to prevent forgetting to turn off. 3.5 Dimmable Modes - Our red light therapy device has 5 adjustable brightness levels: L0, L1, L2, L3, L4, to meet the lighting needs of different stages. Comfortable and convenient, With a soft and flexible strap. Also can be used with power bank (not included), so you can always stay on top of your health when you're on the go. 4.Safe Solution -This safety light therapy device shows no negative side effect on people. 660nm red light can reach the deep layes of the skin to promote the circulation. 880nm light is deeply penetrating for joints and muscles to deeply reach your knee. It helps speed up pain relief and recovery, great for sport injuries, joint pain and muscle relax. 5.Easy to Use - The surface of the red light treatment pad is flat and very soft, which can provide maximum comfort for daily use. You can move freely when wearing it, and you will feel the softness and lightness of the pad. Comes with auto-off timer, hand-free operation in the office or at home. How to use 1.Place on the body and secure straps. 2.Plug into the electrical outlet or use a power bank. 3.Press the on/off switch to activate the device. You can only see the red LEDs; the others are in the invisible light spectrum and cant be seen with our eyes. You can set the auto-off time and can be used multiple times per day. Package include: 1x Therapy Belt 1x Adapter