The Wilson Portable is one of the best selling tennis ball machines available and combines state-of-the-art portability with the performance you expect from Wilson. It is lighter (38 lbs.) and more compact (22"L x 14"W x 20"H) than any ball machine with similar features. Plus, it includes a built-in handle and towing wheels to enhance portability. All functions are controlled by a single electronic control panel. In addition to the control functions it includes a battery charge indicator, and an automatic time delay so you can walk to your playing position after start-up.