1) Training machine. 2) Free battery & remote control. 3) Warranty: One year replacement with free parts and technical ... mode and each program can change automatically every 30 seconds.2.Remote control: ball speed, feed frequency ,work/pause, fixed point/flat stroke ... /vertical, lob,random, top spin, back spin.3. Remote and panel double control,AC and DC Double power.4. Ball speed : 30 ...