FeaturesBall Speed – Up to 75 MPH.Ball Feed – Adjustable from one ball every 1-1/2 seconds to every 10 seconds.Spin Control – Heavy underspin to heavy topspin.Electronic Elevation Control – Ball trajectory is electronically adjustable from groundstroke to lob.110 Ball CapacityRechargeable Battery – Built-in battery provides up to four hours of playing time per charge. Even more playing time is available with an the new External Battery Pack.Smart Battery Charger – Fully charges the battery overnight and shuts off automatically to prevent over-charging. An optional smart/fast charger can charge the battery in less than six hours.Start-up Time Delay – Allows the player time to get to the other side of the net before balls begin shooting.Built-in Handle – Plus towing wheels to enhance portability.Built-in Oscillator – Delivers shots randomly across the court for hitting on the run.Options2-line Oscillator – Allows you to practice alternating forehand and backhand shots, or allows an instructor to automatically shoot to two lines of students.Remote Control – An optional two-button wireless remote starts and stops ball delivery, and controls side-to-side position of the ball throws.AC power instead of battery power for a nominal additional charge.