The interactive dog ball comes with a string that moves along with it, and the irregular movement of the toy attracts the dog to chase it, with realistic dog sound providing mental stimulation and endless fun. Features: This motorized dog ball toy with three different modes (Fast Mode, Slow Mode, Interactive Mode), you can easily switch modes to match your dog's play style and energy level. Built-in motion sensor, when your dogs pokes or bites it, this dog interactive toys will automatically start moving for 5 mins. Equipped with an integrated squeaker, this toy emits bark sounds whenever it moves or gets nudged by your dog, adding auditory excitement to playtime. The shell and rope is made of durable ABS and polyester materials, which can provide satisfying chewing pleasure for the dog. It can roll on most type of floor such as marble, wood, tile floor, thin carpet and thick carpet. Specifications: Material: ABS, Polyester Battery Type: 1 x 200mAh Battery (Included) Charging Time: 1 Hour Working Time: 40 Mins Power Supply Method: USB Charging Cable ( Power Adaptor Not Included ) Size(LxWxH): 6.8 x 6.8 x 8.1 cm(Approx.) Package Contents: 1 x Rolling Ball Dog Toy 1 x Rope 1 x USB Charging Cable Please note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance.