The Elite Grand IV is the most advanced battery operated portable tennis ball machine in the world. The Grand IV offers unrivaled full random oscillation. This revolutionary design allows the machine to throw balls throughout the entire spectrum of the court mixing up speed, spin, trajectory and oscillation. Furthermore, the Grand IV is governed by the machine's sophisticated computerized software which has been programmed to determine all possible combinations of speed, trajectory, and spin. This fully random technological advancement allows for the Grand IV to realistically simulate true match play, a feature that is unsurpassed by any portable tennis ball machine on the market. The Grand IV is also equipped with three pre-programmed six shot drills that simulate the most popular styles of play: grinder, all courter, and power baseliner. These incredible drills mix up speed, trajectory, and spin to prepare you to play against the world's elite! With the press of a button, you can now practice against the playing style of your choice. In addition, the Grand IV is equipped with the most extensive 3-Line function found today. With its three versatile positional settings; Narrow, Medium, and Wide, you can groove your forehand and backhand ground strokes or use it as a great way to warm up your shots. The Grand IV is also equipped with the most revolutionary control panel and optional wireless remote control found today. The "Lexan" control panel utilizes "touch-buttons" instead of dials, knobs, and switches. It also has a digital LCD screen which allows you to view all menu selections and settings. For those players who consider themselves "technologically challenged", do not fear. The Grand IV was developed to be incredibly user friendly and can be operated by even the youngest of players.