This G5® Pro Power ® massager is beneficial to anyone who works out, does strenuous work or competes. Before an activity, use it to enhance flexibility, increase range-of-motion, and reduce the risk of muscle spasms, strains or contusions. After exertion, rely on the G5 Pro Power massager to accelerate the healing process and to reduce muscle pain caused by work and stress. Variable speed from 20 to 50 CPS, an easy on/off control and a directional applicator, make this unit ideal for self-massage at home. 1 Year Warranty