iFetch is an award-winning automatic ball launcher that provides a fun new twist to the game of fetch! Features: Perfect for indoor or outdoor use. Launches the ball 10, 20, or 30 feet. iFetch throws a ball a variable distance when it is placed in the funnel by the dog or person. Launches miniature tennis balls that are 1.6" (41 mm) in diameter. (THREE miniature tennis balls are included with purchase). NOTE: These are NOT full sized tennis balls! Runs on AC Adapter (included) or 6 C-cell batteries (batteries not included). Owner supervision is recommended.