Volitation III is the most well-found of function Tennis Ball Machine by the top-grade designer.  
1.   Various throwing balls type: topspin,underspin,flat, lob, right and left ball,and volleys. 
2.  Inside place long-life large battery: The play time can work 6-hour to 8-hour before recharging. 
3.  Corner-to-corner oscillation: fixed position or different position throwing balls throughout the entire court.
4.  The ball speeds can Set 40 miles per hour to 90 miles per hour.
5.  The shoot ball frequency can play 1.5 seconds per ball to 15 seconds per ball.
6.  The wireless control:front-panel control,  usage convenience fast.
7.  Loading Balls capacity:360.
8.  Cubage: L* W* H= 72* 44*72(cm).
9.  Weight: 58 kg.