8 massage balls do kneading massager with heating function, deep massage on full body Effective massage on any part of the body to accelerate blood circulation, ease sore muscle, and improve sleeping quality Application: Neck, shoulder, waist, buttock, leg, abdomen, arms, thighs, calves etc Massage rotation: clockwise and anticlockwise rotation massage. Various Massage Modes Intensity:3 auto massage modes with 3 levels of intensity Portable and easy to operate Various exterior designs to choose from 12V DC power supply makes it safe in the home or car Automatic timer: built-in 15 minutes auto timing function to prevent overuse.