Overview【Safe and practical】 Suitable for shoulders, back, feet and knees. Use on the back, waist, waist, shoulders, abdomen, knees to promote blood circulation, relieve stress, tension, muscle pain, stiffness or cramps, etc.【Easy to use】It is easy to carry, and it will not bring any weight-bearing feeling when worn on the waist. Enjoy infrared therapy at home, work, travel, jogging and various activities.【Optimal Wavelength】Studies have shown that the wavelength in the 660-900nm spectrum shows the best. The red light device uses a combination of red 660nm and infrared 850nm LEDs, and the ideal wavelength is selected.10 Hz pulse function.Four levels of adjustable brightness.【3 Modes Therapy】Our therapy light pad has 3 modes to choose from, the the first mode is to turn on the 660nm red light alone , the second mode is to turn on the 850nm infrared light alone, and the third mode is to turn on the 660nm red light + 850nm infrared light.