1.Micro-computerized controlling system with 3 vibrators. 2.Different Massager modes are available: kneading,Tapping, Shiatsu,Vibration. 3.To relieve lumbar discomfort and backaches 4.It has assistant cure effect upon chronic strain of lumbar muscles. 5.To alleviate pains caused by menstruation 6.To relieve and relax fatigued back and lumbar muscles after long time of office work. 7.Convenient to use at home and office with a reliable secure DC 12V adaptor (CE, UL). 8.Cigarette lighter is supplied for using in car. 9.Available nylon fabric & PU leather