It is an electrical muscle stimulator that possesses the most sophisticated features. Its major functions include muscle strengthening and pain relieving, and at the same time it can help to improve your muscle tone and make your blood flow more freely. It has features like adjustable intensity settings, preset training programs and perhaps most importantly of all, the portable and easy to use designs it comes in. This makes it ideal for diverse applications ranging from physical therapy and rehabilitation to sports training and all-around good health maintenance. The device sends electrical signals to the nerves - causing muscles then spontaneously to contract. In this way, it can help to avoid the atrophy and maintain muscle mass on the other hand also has potential benefits for recovering from injuries.