The Robo-Pong 540 - Newgy"s fun and easy-to-use ping-pong robot. This model has analog controls to adjust ball speed and frequency. Available spins: topspin, backspin, left sidespin, right sidespin, combination spin. Available shot selection: push, chop, serve, counter, lob, fast loop. Head angle adjustments: from low (serves) to high (lobs). Position the robot anywhere on top of the table to get a variety of angles and trajectories.The Robo-Pong 540 includes Ball Thrower, Ball Bucket (holds approximately 120 balls for several minutes of non-stop play), Analog Control Box, 4 Dozen Orange 40mm Robo-Balls and Owner"s Manual.