Item Features: SIZE：28 x 18 x 19 cm 11 x 7.1 x 7.5 Inch Design：Interactives - Lucky Treat With Rolling Ball Material: ABS,PP,TPR,TPE Item Description: Challenge dogs to work for their treats 3 levels of difficulties Dogs need to roll the ball to get the treats, the easiest level let them get the treat only after a few roll, while the hardest level, will get dogs moving around before getting her/his food reward Light up and sound when dog achieve the rolling goal Lucky treat works with 3 AA batteries (not included) Wireless ball USB Rechargeable