Product DescriptionInteractive Pet Rolling Ball Toy Brand:Changmaius Color:Red/Green/Gray Count:1/2/3 Pcs Interactive Rolling Dog Ball: Rolling Ball Dog Toy is the ultimate entertainment for furry friends. Just press a button and this Interactive Rolling Ball will start spinning, moving and shaking, attracting your dog to chase and catch it Smart Obstacle Avoidance Dog Rolling Ball: Electric Rolling Ball Dog Toy Built-in intelligent motion sensor and automatic obstacle avoidance system, when the dog ball encounters obstacles or narrow spots, it will reverse itself and move away. So no need to worry about the interactive dog ball getting stuck in the corner Three Modes Smart Cat Toy Ball: Interactive Cat Ball Toy built-in fast mode, slow mode , interactive mode Three modes Quick Charging: Interactive Rolling Ball Dog Toy has built in the newest battery technology that allows it to fully charge in only 30 minutes. One battery cycle lasts for up to 6 hours of pure fun Excellent Material: The shell of the rolling ball dog toy is made of environmentally friendly and high-impact ABS material, which is soft, skin-friendly. The rolling friction is strong and quiet, and will not be broken by walls or dogs and cats