Design for Fun: Interactive Ball Launcher is an automatic fetching machine that can be used by dog and owner or just the dog. The launcher features make play easy and fun, all you have to do is plug it in, choose your launching distance and then drop in a 2 inch mini ball. Launch Distance Adjustable: The mini ball launcher can launch the ball 10, 20 or 30 feet, which can easily be changed with the push of a button. Enrichment Toy: The tennis ball launcher keeps your dog entertaining and provides mentally stimulation, while reduce his negative behavoirs. 3 Tennis Balls Included: Please ONLY use our 2 inch tennis balls to avoid function . And always keep the ball clean and dry. ADVICE OF USE: Always supervise your dog while playing. Some toys may be inappropriate for your dog. Remove and replace the toy if it becomes damaged. Note:There is an interval of waiting for 10 seconds when launching the ball. A single ball is served, not a continuous launch. Plug Type:AU Plug,it applies to Australia and so on. Voltage:AC220V Colour:White Material:ABS Size:About 26x27x21cm Package Contents: 1 * ball thrower 3 * balls 1 * power line 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.