... laser, Product Features1, 100% sapphire high efficiency light transmissions system, strong power supply system for high stable laser output.2, Exellent ... 1~50 level can be adjusted3, Laser Wavelength: 808nm4, Laser pulse frequency: 1Hz5, Operate interface: 10.4'' TFT color LCD ... touch screen6, Spot size: 10mm*10mm7, Pulse duration: 10~400ms8, Contact cooling: <5 degree by water9, ...