Now you can get for your home a device normally only available in sessions with a physical therapist or chiropractor. The Prospera Electronic Pulse massager is a compact, portable, micro-computer-controlled device. It may help temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, neck, arm and leg due to strain from exercise or normal household work activities. Portable and cordless TENS away pain Five Auto Modes: combo, tap, shiatsu, press and knead (stimulation programs) Ten intensities for manual adjustment Wireless operation means you're free to move, work, shop, exercise and watch TV/TENS anytime 15 min auto shut off Charge and battery lasts for 2 weeks with average use of 1-2 times a day Dimensions: 4" x 3" plus attachment pads Features: Battery Operated Battery Type: Alkaline Base Material: 65% Metal, 20% Plastic, 15% Polypropylene Battery Size: Aa Care: Wipe Clean Country of Origin: Imported