The Sports Tutor Tennis Tutor ProLite Basic Battery Oscillator is the smallest, lightest professional ball machine on the maket. The Tennis Tutor ProLite is a full-featured professional ball machine, but only stands 12 inches tall and weighs less than 30 pounds. The tennis ball machine features five-second set-up, ball speed range up to 60 miles per hour, variable trajectory from groundstroke to lob, and a built-in rechargeable battery. The ProLite Basic Battery comes with a built-in oscillator for a wider range of shots to practice with. Players looking for an affordable and portable tennis ball machine with basic features will love the Sports Tutor Tennis Tutor ProLite Basic Battery Oscillator model.