Professional-Strength Power in a Personal SizeA lot of power in a little package, The MINI PRO2 is a professional strength massager in a personal, self-use size. Using the same patented Thumper percussive action, the MINI PRO2 was designed for those hard to reach areas like the shoulders and mid-back. Weighing only 3 pounds (1.4 kg), the MINI PRO2 has three electronically regulated power settings for use on both thick and thin muscles. It's perfect for packing and travel. For those hard-to-reach areas like the shoulders and midback. For those thinner spots or for use on children and the elderly. For easy packing and travel. Use it on medium or high for the thighs and calves, on larger, thicker muscles. It's fully adjustable to the person or body-part you wish to thump! Easily penetrates even the thickest of muscles. Both thick and thin muscles, both adults and children. Three power settings let you choose just the strength you want. Balanced output: 95% of MINI PRO2's output energy is directed through the massage spheres, with no 'kick-back' to the handle. Works through clothing. Two anatomically-designed massage spheres pivot up and down a full 1/4" (6.35 mm), adjustable from 20 to 40 times per second producing deep penetrating waves to release tension and knots.