EASY-TO-USE KNOB CONTROLS - No programming or phone app required. BALL THROWS - 10 to 60 MPH >> SHOT SELECTION - Groundstrokes to Lobs. BALL FEED INTERVAL - Adjustable from every 1-1/2 seconds for quick reaction volleys to every 10 seconds. RANDOM OSCILLATOR - Delivers shots randomly across the court for hitting on the run. FOLD-OUT TOWING HANDLE – Tows like luggage on built-in caster wheels. INTERNAL RECHARGEABLE BATTERY – Built-in battery provides up to four hours of playing time per charge. Includes Smart Battery Charger that fully charges the battery overnight and shuts off automatically to prevent overcharging. THREE YEAR WARRANTY - Check this against no warranty for many offshore brands. We can offer this long warranty because we are MADE IN THE U.S.A. >> SERVICE - We are here for you at our factory in Burbank, CA. If you need advice, parts, accessories or service just call us toll free from the U.S.A. LIGHTWEIGHT - Weighs less than 30 pounds and stands only 12 inches tall. BALL CAPACITY - 125 balls SEE CHART BELOW for more Sports Tutor tennis ball machines including ProLite with Remote. Tennis Ball Machine for begiining, intermediate and advanced players.