AVAZZIA Med-Sport B.E.S.T. Microcurrent Biofeedback Electro-Stimulation Technology. Biofeedback is the body's response to stimulus and the technology's aility to detect, respond, measure, analyze and respond to the body. The Med-Sport detects the change and responds, resulting in the very next signal being modified. Kit comes with carry case, adapter/splitter wires, electrodes and a fingertip massage attachment.