SIS targets the deep lying structures, bringing the results such as pain relief or muscle stimulation.
SIS technology allows for selective depolarization of the nerve fibers
"The innovative BTL Super Inductive System (SIS) technology allows for selective depolarization of the nerve fibers. Even though the therapy does not require direct contact between the skin and the applicator, it targets the deep lying structures, bringing the results such as pain relief or muscle stimulation."