Safety The interactive cat ball is made of the environmentally friendly ABS material, which is safe and non-toxic. The ABS material is also anti-scratch and anti-bite. The LED light on the ball will not be harmful to the eyes of the cat. You can use it in the pease of the mind. Diameter of the ball: 6.5cm. Interesting Interaction Cat toy ball operation is very simple, with just one push of a button, the ball will start self-rotating 360 degrees and start the interesting interaction. The ball will continuously move around your house while simultaneously producing a red light to attract your pet's attention. Intelligently Avoid Obstacles After the cat ball starts to roll, if it meets any obstacle, the ball will automatically spin. So you don't have to worry about the cat toy being stuck in the corner. Make sure the cat can continue to play with the ball, consuming excess energy without worrying about vandalism. USB Rechargeable The pet exercise hunting toy is equipped with a USB connector, making charging easy and convenient. You don't need to replace the battery. It can be completed in 1.5 hours and can provide up to 4 hours of play time for your cats. Automatic Shutdown The bale turns off automatically after 45 minutes of rolling. If you don't have time to take care of your pet all the time, you can choose this cat toy ball to free up your time. Please contact us if you have any problems about our product.