... screen, high tech and quality laser hair removal Product Features1, 100% sapphire high efficiency light transmissions system, strong power supply system for high stable laser output. ... : 40J/cm2, 1~50 level can be adjusted3, Laser Wavelength: 808nm4, Laser pulse frequency: 1Hz5, Operate interface: 10.4'' TFT ... Contact cooling: <5 degree by water9, Diameter: 420mm*380*1150mm Laser Hair Removal System