TENS/EMS MUSCLE ELECTROSTIMULATOR AND PAIN RELIEF: muscle strengthening, pain relief, rehabilitation, muscle regeneration, relaxing and toning massages, and physiotherapy treatments etc... this device has transcutaneous electrical nerve stimulation technology (TENS), a clinically proven technology that is safe and effective against pain. 16 programmable massage modes, 20 intensity levels adjustable in progressive steps. People suffering from back pain, arthritis or osteoarthritis, muscle tension in the shoulders and other problems, can benefit from the relaxing and muscle tension release properties offered by this device. Muscle electrostimulator Including 8 stickers, reusable conductive-provide the best self-stick performance and easy clean up after 25 to 30 uses for longer life. tens electrostimulator is Small and Light, portable and easy to use, it is more easy and portable for you to use at home, in the office or when you travel. Built-in rechargeable lithium battery, allowing up to 10 hours of continuous use. The device can be plugged into a wall outlet or a computer USB port to recharge it. No more interruptions during a session and no more need for batteries