... Acne scars, burnt scars and surgery scars, etc Collagen Stimulation Vertical 0 - 20KHz Ultra Pulse, CO2 Fractional Laser Machine MED- ... 870+, 635 n Large Image : Vertical 0 - 20KHz Ultra Pulse, CO2 Fractional Laser Machine MED- ... -by Working Continuously for 18 hoursDisplay10.4" True Color LCD Touch ScreenElectrical Requirements100-240VAC, 20A max., 50/60HzNet Weight52 ...