Red Light:640nm Blue Light:423nm Yellow Light:583nm Infrared Light:880nm(Light spot is Invisible) Treatments are less expensive than other light based therapies. The main benefit is a reduction in the appearance of fine lines, wrinkles, freckles, brown spots, scars and the amount of redness. In addition, the treatments are pain free with no downtime at all. With continued use, led light machine will improve your overall skin health, giving you a lit-from within glow. We will take care of you, and your led light machine (should you need any repairs), and has a 60 day guarantee.