1. It is controlled by Microcomputer. There are four kinetic massage heads on back position and two high-frequency and vibrant massage motors. 2. It can release waist pain and back pain, improve bones and muscles circulations and strengthen human body. 3. It can be used any place, e. g. car, home and office. 4. It is very slight, small and easy to taken. 5. It can massage any point you choose and has different massage methods. 6. Both massage intensity and rate has three adjustable kinds of ways. 7. For delicate package, it can be gifts and sold on television shopping.