Features: 1. One key to open the tumbler function, it can rotate by 360 degrees randomly while keeping mute, which can arouse the cat's hunting nature. 2. The toy will automatically stand by after three minutes without interaction and automatic run after the cat touches it to reduce battery consumption. 3. Made of the eco-friendly and safe ABS material, it is non-toxic and tasteless. 4. The toy can help the cat to release the pressure and extra energy, exercise the cat's response-ability. 5. The look is cute and attractive, making the cat love to play it.