Lobster Sports &ndash; Elite Two Tennis Ball Machine &ndash; Triple Oscillation &ndash; Lightweight &ndash; Full-Featured Tennis Ball Hopper &ndash; 4- to 8-Hour Battery Life &ndash; 50-Degree Lobs &ndash; Optional Accessories TRIPLE OSCILLATION: The Lobster Sports elite two tennis ball machine is built with unique triple oscillation. It oscillates both vertically and horizontally, the first engineering design in tennis ball machines to simulate match play. DURABLE YET LIGHTWEIGHT: This tennis ball machine was designed to hold up against frequent use. Weighing only 42 pounds, the elite two is easy to load into your vehicle and unload. The durable elite two challenges tennis players of all levels. 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. IMPROVE YOUR GAME: The elite two tennis ball machine has multiple features for helping tennis players improve their reaction time and overall game. Practice against sky-high lobs and blistering speeds of 80 mph. Feed rate: 2-12 seconds CHALLENGES ALL STROKES: This battery-operated 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.