Feature:1. OBSTACLE AVOIDANCE: With built in intelligent motion sensor and self avoidance system, If the ball hits an obstacle or a narrow place, the ball will turn around and move away.2. 360 DEGREE ROTATION: With just a single press of a button, the ball will start to do a 360 degrees self rotation and light up LED lights to attract cats to hunt and capture.3. INTERACTIVE: The cat ball comes in 2 modes, normal mode: The toy starts rolling automatically, shutdown after 5 minutes, and smart mode: press for 3 seconds in normal mode to enter switch mode ,shutdown after 5 minutes.4. USB CHARGING: The cat ball with LED light can be recharged via USB, with charging indicator light, red light indicates the battery is low, blue light indicates the battery is being charged, and green light indicates the battery is charging, very convenient.5. MATERIAL: Smart Cat toy is made of safe ABS silicone, bite resistant, durable, increased rolling friction and more quiet, providing you with a quiet resting environment.6. GIFT FOR CATS: This cat toy ball will attract your cat to chase all day long, keeping your cat physically and mentally healthy, and helping to reduce loneliness.Specification:Item Type: Smart Interactive Cat ToyMaterial: ABS, siliconeBattery type: Polymer lithium battery 80mAh (shipped with built in battery)Diameter: Approx. 43mm / 1.69in.Package List:1 x Cat Toy Ball1 x USB Cable