EVERLAST Electronode Wireless Therapy TENS Massager A muscle stimulator with 10 adhesive pieces which can be placed anywhere in the body that need some relief from pain and requires a great massage. The different modes makes it suitable for everyone at home. Multi-functional Tens Massager with 24 Preprogrammed Massage Modes for Pain and Muscle Relief. TENS unit help relieve pain associated with sore and aching muscles in the shoulder, waist, back, neck, upper extremities (arm), and lower extremities(leg) due to strain from exercise or normal household work activities. Electric massager is also intended to be used to stimulate healthy muscles in order to improve and facilitate muscle performance. *One of the packages is opened to make sure device worked properly, but was NOT used