Lobster Sports &ndash; Elite Two Tennis Ball Machine with Elite 10-Function Remote Control &ndash; Triple Oscillation &ndash; Lightweight &ndash; 4- to 8-Hour Battery Life &ndash; 50 Degree Lobs &ndash; Optional Accessories ELITE 10-FUNCTION REMOTE CONTROL: This Lobster Sports battery-operated tennis ball machine includes an elite 10-function remote control for ball speed, ball spin, ball feed rate, elevation up and down, and more. TRIPLE OSCILLATION: This tennis ball machine is built with a triple-oscillation function. It oscillates both vertically and horizontally, the first engineering design in tennis ball machines to simulate match play. FOUR TO EIGHT HOURS OF BATTERY LIFE: Lobster Sports has designed the elite two with a long-lasting, high-capacity battery. A four- to eight-hour battery life helps ensure plenty of court time between recharges. CHALLENGES ALL STROKES: The Lobster Sports elite two tennis ball machine will challenge all your strokes, not just the forehand and backhand. The elite two combines a great price with never-seen triple oscillation. IMPROVE YOUR GAME: The elite two tennis ball machine has multiple features to help tennis players improve their reaction time and overall game. Practice against sky-high lobs and blistering speeds of 80 mph.