3 wavelength laser combines 755nm 808nm 1064nm, suits for all skin tones and hair types treatment.755nm for white skin (fine/ golden hair) hair removal.808nm for yellow (natural) skin hair removal.1064nm for black skin (black hair) hair removal. The high power capacity provides sufficient energy for optimum results. The multistage steady flow system and high precision anti-shock function minises impact on the laser. Prolong the lifespan of the 808nm Diode Laser Hair Removal Machine greatly. Diode laser technology is based on the selective dynamics of light and heat The laser goes through the skin surface to reach the root of hair follicles light can be absorbed and converted into heat damaged hair follicle tissue so that hair loss regeneration without injurysurrounding tissueSlightpain.syi