Automatic Pickleball Machine - The machine releases one ball every 4 seconds for consistent practice. Height is adjustable from 1.6 ft to 8.2 ft, and the shooting distance can be set from 13 ft to 43 ft. Training versatility - Adjustable angles and speeds with an auto swing function provide varied shot patterns. Ideal for mastering volleys and return of service training, suitable for both individual and doubles practice. Power options and portability - Powered by D batteries, AC power, or a portable power bank for convenient outdoor use. No need to locate a power outlet on training days. Ball capacity and compatibility - Expandable ball chute holds up to 19 balls, expandable to accommodate more. Suitable only for 74mm (2.9-inch) standard pickleballs. Pickleballs are not included. Use scenarios - Solo skill development at home, gym, or outdoor court without requiring a partner. - Doubles practice to improve return of serve, volleying, and scrambling across the court. - Outdoor practice at locations with limited or no power access, using battery or power bank power options.