The Centurion Therapulse is a battery operated unit which contains 10 coils and can be used to treat all of the body at the same time. The blanket is constructed of a heavy cotton twill for standing up to lots of wear and tear. A very popular model because of its ease of use, its battery feature allows for unencumbered use with no wires needing to be draped into stalls…PLEASE NOTE THIS PRICE IS A MONTHLY RENTAL PRICE. Inquire for outright purchase price.