2009 Model Silent Partner Star Tennis Ball Machine! Excellent condition! - 15 to 95mph backspin to topspin setting (dial); Feed-rate control (dial); manual elevation setting; random oscillator or fixed; remote control (to turn on/off feed and sweep function); 1 fixed and 1 removable battery. - Playing time: up to 4 hours; optional spare battery (if you can actually play longer than 4 hours at a time!) - 46lbs; has wheels and pull out handle for easy rolling. -$500 firm; don't try to negotiate since I already hate the fact that I have to sell it! I just purchased this unit about 1 1/2 years ago and used it about 20 times. It's in excellent condition (you can try it out for yourself) and if I were in better financial conditions I would keep her! Come see it for yourself! I'm located in Inglewood, CA (10min. from LAX) 310-429-7591 or email@example.com if you have any questions, etc.