Prospera's beautiful Personal Massager with its high-tech and ultra-lightweight design brings a steady, relaxing massage to tired muscles. Your neck, shoulders, and back will sigh with relief when you soothe them with this massager. But don't neglect your legs and abdomen--they will appreciate the knock and high-speed vibration massage as well. The massager comes with 4 speeds, the first being a steady knocking, and the other three as high-speed vibrations. The Personal Massager's head is soft and water-proof. Its flexible movement brings a maximum sensation just where you need it. The head is flexible and rotates.Product Specifications:• Highest grade powerful motor with speed of up to 6800 rpm, driving high-speed vibration• 1st option is knocking massage• 3 options of high-speed powerful vibration• Input 110V• Measures 13"x3"x2.5"• Weighs 2 lbs