... to the skin and sweat glands, no scar, no any side-effect .5.Strong Sapphire touch cooling system can make ... momentary epidermal anesthesia, no any painless during , increases comfort during treatment.6.Quick: Squared ... +semi-conductorCrystal temperature-5~5°CPower requirementAC220V/110V 50~60Hz if any requirements, please feel free to contact me. best regards, ...