The Tennis Tutor ProLite is the smallest and lightest professional ball machine. It is a full-featured yet it stands only 12 inches tall and weighs less than 30 pounds. Patented technology borrowed from the world's #1 portable ball machine, the Tennis Tutor, makes it possible. Tennis Tutor ProLite Basic Model Battery Powered is a battery-powered model. The built-in rechargeable battery typically delivers two to three hours of playing time. And it can be recharged between 500 and 1,000 times before replacement. The Battery Models come complete with a plug-in charging unit that fully charges the battery overnight. Features Include: - Five-second Set-up. The ball hopper opens in seconds to hold 125 tennis balls. Just load the balls and you’re ready for action. - Versatile Speed. Ball speed is variable from a gentle toss that’s ideal for kids just beginning tennis, to hard-hitting groundstrokes that will challenge even top amateur players. - Variable Ball Feed. Ball feed rate is variable from one ball every 1-1/2 seconds (for quick-reaction volleys), to one ball every 10 seconds. - Start-up Time Delay. A start-up time delay allows the player time to get to the other side of the net before balls begin shooting. - Full Range of Trajectories. Ball trajectory is manually adjustable from groundstroke to lob. Specifications: Ball capacity......................125 Balls Trajectories.......................Groundstroke to Lob Max. Ball ejection speed.....10-60 MPH Ball feed rate.....................1.5 to 10 seconds Oscillator...........................Optional Dimensions (closed)...........12"H x 19.5"L x 18"W Weight (Battery Model)..............29 pounds Sports Tutor 3436