The major difference, advantage and work of iTERACARE with other “Copycats” out there is that the penetration goes 20 cm deep to reach and unblock and transport the smallest blood vessels. It acts on the nerve endings attached to the spinal cord. That is THE BIG DIFFERENCE SUPPORTED BY 6 years of R&D with accreditation and recognition that followed. It is worth noting that many physical therapy and wellness centers use TeraHertz devices for their Clients/Patients, which involves high costs. It is a great saving and convenience to just have your personal device in the house for the whole family.