Experience the Power of Dual Therapy: Transcutaneous Electrical Nerve Stimulation (TENS) and Powered Muscle Stimulation (PMS) in One Portable Device! MHD TENS is portable and DC 3.7V battery powered device, offering both transcutaneous electrical nerve stimulator (TENS) and powered muscle stimulator (PMS) qualities in one device. MHD TENS has 12 operation programs, which can give certain electrical pulses through electrode adhesive pads to the suggested area of the body where the electrodes are placed.