TENS unit EMS Muscle Stimulator 4 outputs Handheld Electrotherapy device | Electronic Pulse Massager for Electrotherapy Pain Management Pain Relief Therapy: Chosen by Sufferers of Tennis Elbow, Carpal Tunnel Syndrome, Arthritis, Bursitis, Tendonitis, Plantar Fasciitis, Sciatica, Neck Back Pain, Shin Splints, Hamstrings and other Inflammation Ailments Patent No. USD723178S