Wide Range of ApplicationsRed& infrared light therapy devices helps relax muscles and muscle care.It works body wrap, which is suitable for waist wrap, stomach wrap, knee wrap,foot wrap, shoulder wrap,belly wrap, hand wraps and other body wrap. 660nm& 850nm Wavelengths for Different Effects :Different penetration requirements can be achieve by various wavelengths of light.Red lights 660nm wavelength is able to deep into tissue, Infrared light 850nm wavelength can be deeper into tissue than 660nm wavelength.make the tissues absorb energy, promote circulation.High-Irradiance and Sufficient Length:Each LED light contains 3 chips, and the average optical power density is as high as 177w/ (17.7mW/cm⊃2;).The higher the power output (irradiance), the more red led lights emission, which can greatly shorten the required time.Red light therapy for body device is compose of 63pcs 660nm red light and 42pcs 850nm infrared light.It works body wraps, sufficient length can better cover the therapy area, deeper into the tissue.5 Levels of Brightness Adjustable:The brightness of red light therapy belt is adjustable, which can regulate the required brightness by controller according to individual demand.When the brigthness changes, the temperatue will changes.Relaxation under the warm led light therapy.Considerate Timing Function:The red light therapy waist wrap belt owns a 0-30 minutes timer function, which can set your ideal therapy time by yourself.A maximum temperature of 113°F (45°C) protect effectively the skin from burning for high temperature.It's safe to use even during sleeping.Waterproof and Oil-proof Protective Layer:The red Led light therapy belt has a TPU transparent protective layer, which can block the sweat and oil on from the skin, so that the belt can be used on the bare skin and it also protect the therapy red light device from damaging. please contact us to replace or refund for you.Please seek professional help and contact us in time if you have any discomfort during use. Number of light therapy lamp beads and chips:Total 100 LED lights beads,63pcs 660nm red light beads,42pcs 850nm infrared light beads,1 LED light bead contains 3 chips, total 315 chips .Product size: 49.6*7.1 inches/126*18 cmHigh-IrradianceThe highest optical power density is over 2000w/ (200mW/cm²).Notice: Portable power meter can measure the maximum value of 2000w/.The higher the power output (irradiance), the more red led lights emission, which can greatly shorten the required time.