Innovative Interactive Design: This vibrating ball has automatic shaking and vibration functions, imitating the dynamics of real prey, attracting your pet to actively participate. Built-in multiple sports modes, giving pets more diverse entertainment methods LED Lighting Effect: Equipped with a bright LED light ring, it can be clearly seen in a dim environment, adding fun to night walks or indoor games Bite-Resistant Material: Made of high-strength TPR material, it is bite-resistant and wear-resistant, designed for active dogs; the surface is non-slip textured for easy grip, which increases the safety and fun of the game Smart Activation: When your dog touches or bites it, the shaking dog ball will automatically roll and rotate for 5 minutes or bounce wildly for 5 minutes, and then enter standby mode Portable and Easy to Use: The lightweight and portable design (2 inches) is very suitable for carrying when going out for a walk or traveling; USB fast charging, strong battery life, meet daily use needs Item Name: Rolling Ball Toy Material: TPR Battery Capacity: 200mAh Features: Interactive. Automatic Moving, Electric Size Details: Diameter: 5.2cm/2.05" (Approx.) Package Includes: A,B,C,D,E,F: 1 x Rolling Ball Toy 1 x Charging Cable or G, H, I, J: 2 x Rolling Ball Toys 2 x Charging Cable