... 9ms, adjustableHandle cooling temperature:-10°C~0°C, adjustable RF system RF frequency10MHZEnergy density:110J/cm2Output mode:BipolarEnergy2~300J, adjustableHandle cooling ... in China, specializing in Vacuum+infrared laser+Cavitation+RF, IPL System, Elight System, RF System, Cavitation System, Laser for Hair Removal ... will like our machine after test.Best regards,Jolin laser unipolar rf elight