Smart Obstacle Avoidance: Cats play with a ball with one key activation, can roll, and will automatically rotate 360 degrees in the direction even if it encounters an obstacle. Harmless to furniture. USB CHARGING: No batteries required, just plug the cable in for 1.5 hours and your cat can enjoy up to 4 hours of fun. EASY TO USE: Just press the ball to start it, and it turns off automatically after 15 minutes. The built-in LED light flashes to make your pet chasing more fun and playful. Good pet toy: The spinning ball can activate the cat's hunting instinct, help the cat get more exercise, improve immunity, and reduce obesity. This ball is also a great interactive dog toy, more fun for dogs and cats. It can be rolled 360-degree direction, and even if it encounters obstacles, it turns around automatically. No damage for the High-quality, non-toxic ABS plastic, abrasion-resistant, drop-proof, claw-proof, bite-proof. Not easy to break. Don't even break the wall for hundreds of times so your cat can play safely