1 .Four driven wheels on the backrest
 2 .Back massage mechanism with four massage mode of kneading, tapping, knocking,finger pressing
 3 .Vibrating massage and air pressure massage on seat cushion
 4 .3D roller mechanism design
 5 .Air pressure massage for footrest
 6 .Rolling massage for feet
 7 .LCD display to show the using time
 8 .Auto alarm function, when some user sit in the chair without enough coins
 9 .Big coin box, which can accommodate 900coins.
 10.Connect to the contrast type coin box .