The Premier Pet® Automatic Ball of Yarn Cat Toy keeps your cat active and entertained with this modern take on a classic toy. Once the batteries have been installed (not included), simply press the On/Off button and the ball will start rolling around on its own. The string and bell will be pulled behind it, flipping around for added fun and encouraging your cat to chase and pounce. After 10 minutes of playtime, the toy will automatically shut off to allow your cat to rest. By encouraging your cat to exercise and providing mental stimulation, this toy helps keep cats of all ages, happy and healthy.