[[ A New Choice for Drug-free Pain Relief ] - The TENS Unit Machine is used for the symptomatic relief of chronic intractable pain. The ems muscle stimulator can relief of pain associated with sore and aching muscles in the arm. shoulder. neck. back. waist. abdomen hip and leg due to strain from exercise or normal household and work activities. It helps relieve your body pain instead of taking pills. A new choice that will provide instant muscle pain relief. [22 Programs & 40 Intensity] - The BHK-TENS muscle stimulator is equipped with 2 output channels and 22 programs also designed with 40 intensity levels offering you more options for relief therapy without shock feelings. Different programs use different pulse rate (Hz) and width (uS) you can find them on screen so can easily find the most suitable program and intensity for needs. Your physiotherapist may recommend it to you. [Equipped with Upgrade TENS Electrode Pads] - The TENS Machine use upgrade electrodes which has the industry leading adhesive and 2mm pin-in connector can provide much better self-stick performance and more stable current without shock feelings. "[ Professional Pain Reliever ] - The medical grade tens unit has passed professional medical certification test can relax muscle spasm and increase blood flow circulation. It is used for the symptomatic relief of chronic intractable pain and the temporary relief of pain associated withsore and aching muscles in the arm shoulder neck back waist abdomen hip and leg due to strain from exercise or normal household and work activities Its a good back pain relief products. It also a ems muscle stimulator to post-surgical stimulation of calf muscles to prevent venous thrombosis." [Pocket size but huge power] - This electric tens machine built with a powerful lithium battery for 30 hours of continuous therapy. This tens machine makes it possible for you to relax any time at anywhere in your house office car or travel on the go.]