The MH8305 Pre-Programmed unit integrates EMS and TENS functions with 27 preset programs and 3 programmable programs. The preset programs are prepared in the factory according to the customer’s parameters. The programmable programs are available to be set and stored by user. This unit is a hybrid stimulator which is designed for muscle stimulation and pain relief. It is portable, light weight and battery-powered electronic unit. Electrical Muscle Stimulation (EMS) is an advanced muscle exercise and toning technique that is an efficiently & effectively supplement to your workout routine. EMS units are designed to exercise body muscles by applying a chosen intensity and frequency of electrical current repeatedly in a series of stimulated contraction & relaxation phases. Transcutaneous Electrical Nerve Stimulation (TENS), designed for symptomatic relief and management of chronic intractable pain. TENS is a safe non-invasive drug-free method of pain management. “Transcutaneous” means across the skin. It relieves pain by sending tiny electrical impulses through electrodes placed on or near the area of pain or pressure point to underlying nerve fibers.