... 100% sapphire high efficiency light transmissions system, strong power supply system for high stable laser output.2, Exellent contact cooling for ... screen, user firiendly operating interface.4, Advanced ARM hardware control system, software setting based on skin types.5, Safety warning ... etc.6, Emergency stop system.Specification1,Power supply: AC110V~120V or 200V-240V 50Hz2,Laser Energy: 40J/cm2, 1 ...