Powershot 3 NG (Next Generation) now also high speed topspin
If you want the most professional tennis ball machine with lots of features (even programming) and high speed and spin, the Powershot 3 NG is the best choice. Even professional players (WTA and ATP) use this ball machine for their trainings. And all is included: internal battery (6-8 hrs!), 220V, remote control, high ball capacity, big wheels (for transportation) and much more.