Features QUALITY MATERIALS: Made of high-quality PCPET material, this dog toy is sturdy enough to withstand pet bites and scratches. Maintains durability in both smart and normal mode and can be used for a long time LED LIGHTING EFFECT: Equipped with bright LED light rings, it can be clearly seen in dim environments, adding fun to night walks or indoor games SMART ACTIVATION: When your dog touches or bites it, the shaking dog ball will automatically roll and rotate for 5 minutes, then enter standby mode PROMOTES MENTAL AND PHYSICAL DEVELOPMENT: This toy provides physical exercise and stimulates mental development. Pets can engage in different play modes such as puzzle solving and chasing moving parts, supporting overall growth through play SUITABLE FOR SMALL TO MEDIUM DOGS: Specially designed and sized for small to medium dogs, accommodating various breeds and providing an interactive experience that suits your dog's needs and play style Notice: 1. Actual color may be slightly different from the image due to different lighting conditions 2. Please allow 1-3cm deviation due to manual measurement Material: PCPET Diameter: 52mm Battery Capacity: 150mAh Accessories: 1 charging cable Package List: 1x Shaky Ball Toy for Dogs