about this item Safety The interactive cat ball is made of 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 cat's eyes. You can use it in peace of mind. Ball diameter: 6.5cm. Interesting InteractionCat toy ball operation is very simple, with just one press of a button, the ball will start to rotate 360 degrees auto and start the interesting interaction. The ball will continually move around your home while simultaneously producing red light to attract your pet's attention. Intelligently Avoid ObstaclesAfter the cat ball starts rolling, if it encounters an obstacle, the ball will automatically rotate. So you don't have to worry about the cat toy being stuck in the corner. Make sure the cat can continue playing with the ball, consuming excess energy without worrying about vandalism. USB RechargeableThe pet exercise chase toy is equipped with a USB connector, making charging easy and convenient. You don't need to replace the battery. It can be filled in 1.5 hours and can provide up to 4 hours of play time for your cats.