The Terminator Zapper eliminates parasites, fungs,viruses and worms by pulsating at 15Hz a soft electrical current into your skin negatively ionizing your body. Most of us suffer from one of these and they are positively charged. When the negative current enters your body, they simply die and are elimiinated. More in depth info is found on the Terminator webpage: www.tuzapper.es There are more discounts for wholesale starting with 5 units. please ask us.