Pet Electric Toy Ball Dog Toy Plush Ball Rolling Ball Hair Ball King Sweeping Robot Vacuum Cleaner Features: 1. The magic ball is made of high-quality materials, wear-resistant, not easy to break, reusable and durable. 2. Reduces Separation Anxiety: The Rollerball is designed to keep your pet busy and reduce stress when you neglect them. it& 39; very suitable when you & 39; At work, have an important task, or just relax and enjoy some quiet time. 3. PROMOTES STRONG MENTAL HEALTH: It's not uncommon for our dogs to get bored, especially when they're home alone all day. Designed with interactive features to stimulate your pet & 39; the play instinct, it & 39;s perfect for keeping our pets happy and energized 4. Built-in battery powered motor: it will automatically roll from inside the motor. Just unscrew the ball, insert the AA batteries, hit the button on top and watch your pet play for hours 5. Automatic mobile interaction: the sweeping plush ball will automatically roll Its unique interactive features inspire your pet and 39;'s curiosity, get them involved. INCLUDES 4 MACHINE WASHABLE COVERS: Each ball includes 4 different machine washable covers. Note: 1. Due to different monitors and light effects, the actual color may be slightly different from the picture 2. Due to manual measurement, please allow 1-3 cm deviation Description: Material: plush + reusable plastic Size: 13.5*13.5 *13.5cm Power: 1 AA battery (not included)