This multifunction electrotherapy unit is portable and has a user-friendly interface. The ergonomic design includes 4 settings for different modalities: Transcutaneous Electrical Nerve Stimulation (TENS), Neuromuscular Electrical Stimulation (NMES), Interferential Stimulation (IF), and RUSSIAN (RUSS). This powerful device delivers up to 10,000 Hz of IF therapy and 2500 Hz of RUSSIAN therapy for maximum treatment benefits.