Multifunctional Tens Massager with 12 Preprogrammed Massage Modes for Pain and Muscle Relief. TENS physiotherapy massager helps 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. An electric massager is also intended to be used to stimulate healthy muscles in order to improve and facilitate muscle performance Non-Invasive, Non-Drug Choice for Relieving Pain. If you have chronic or acute pain, just try this TENS massager for relief. It is with human body simulation technology, and microcomputer intelligent control technology, that simulates a variety of massage methods. Help for treating back pain, arthritic or inflamed discs/ joints, shoulder tension, and muscle Relief Dual Channels with 12 Modes, 15 level Intensity, and Time Control. You can operate it with different intensity settings at any time anywhere be it your home or office, car, or travel on the go Total body relaxation: use for the back, knee, shoulder, ankles, wrist, and elbow and make this the most powerful weapon for your body relax Equipped with Dual operation mode. Use it with electricity through a power adapter and USB cable provided or else you may use 3 x AA Alkaline batteries to operate it wirelessly Pack Contents: Electronic TENS Pulse Massager Device + 4 Gel Pads + 2 Electrode + USB Cable With Adapter + User Manual (PULSE_MASSAGER_001)