Prospera s Penguin Massage Belt works on the aches and pains of muscles in your back, waist, arms, legs and abdomen with its powerful knock and high-speed vibration massage. You can regulate the intensity of the massage you want in four operating modes: constant vibrating, pulse, wave, and cycle of vibrating.Your muscles will sigh with relief when you soothe them with the Penguin Massage Belt . The ultra-light unit comes with a remote control and can be easily adjusted with a Velcro strap, to bring maximum sensation just where you need it. The belt length is extra long to fit all sizes. Relax at home or in the office!