Description: 【Intelligent Pet Toy】Our intelligent rolling ball is an interactive toy designed to entertain your cats. It's perfect for those times when you're too busy to play. Your have fun chasing and playing, keeping them active and happy. 【Self Entertaining】The automatic cats ball toy ball moves randomly and changes direction when it obstacle, providing fun for your cat. It's a great way to relieve boredom and keep your pet entertained. 【Quiet】The pets balls operates quietly, ensuring no disturbance to your household. Providing hours of entertainment for your cat. 【Durable】The toy ball made with high quality silicone materials. Its thick, wear resistant material ensures durability and longevity. 【Perfect for Kittens】This bouncing rolling ball is perfect for kittens and adult cats. It's a great way to keep your pet entertained, active, and healthy. Specification: Material: Silicone  Size Chart: Diameter: 4.2cm/1.65inch  Package Includes: 1 Automatic Cats Ball 1 USB Cable(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.