**PetSafe ball thrower is an automatic ball thrower that can be used both indoors and outdoors.Put the ball in the hole or teach the dog to do it himself, the ball launcher will automatically launch the ball anywhere between 2.5-9 metres.The ball launcher has a built-in safety sensor that ensures the ball is not launched if you or the dog are too close.Facts about PetSafe ball thrower:Ball is launched between 2.5-9 metres.Fits standard size tennis balls.2 balls included.Adjustable in nine different distance positions.Handle for easier transport.Automatic rest mode.Water resistant (not waterproof).Requires 6 D batteries (not included) or power cable (included).