1. Four wheels 3D massage mechanism
2. Backrest position with vivid massage function of kneading up,kneading tapping
3. Vibration massage and air pressure on seat cushion,Air pressure massage on calf position
4. Large money box which double lock, New LED display,easily control
5. Auto alarm function,when some user sit in the chair without enough coins
6. Scratch resisitant armrest design
