Gain greater control of your training regimen with the battery 2 function remote control. It controls both the feed and the sweep. Current owners may simply add this feature to their machine's already dynamic functions. This option must be factory installed. Current owners may ship their machine to Lobster for upgrade. Warranty One year warranty on parts and labor unless misused, neglected or altered on machines. Six month warranty on battery, accessories and parts. To order the Elite Tennis Ball Machine, click here . To order the Elite 2 Tennis Ball Machine, click here .