... of random mode(different conbinations of ball speed,fixed point,flat stroke, horizontal, vertical, lob, top spin, back spin, Wide- ... ball speed can be fully random adjusted,which makes the machine more human oriented.Ball speed : 30-150 km/hr (remote ... buttonRemote control: ball speed, feed frequency ,work/pause, fixed point/flat stroke, horizontal/vertical, lob,random, top spin, back spin, forehand ...