1、Built In Multi Color Flash: This motion activated dog ball has a built in multi color flash to stimulate your dog's curiosity and desire to explore, allowing you to interact with your pet with ease. 2、Rich Interactive Mode: This active rolling ball has rich interactive modes, normal mode is moving and rotating. Frantic bouncing mode is bouncing and rotating. Press and hold the button for 2 seconds, then press it quickly to select the mode, the light blinks fast is in crazy mode, and the light blinks slowly is in normal mode. 3、Built In Motion Sensor: This smart interactive dog ball toy has a built in motion sensor that automatically moves, spins or bounces for 10 seconds when something touches it to get your dog's attention, if not, it goes into standby mode. 4、Sturdy And Durable: This motion activated automatic rolling ball toy is made of excellent PC and TPU material, which is sturdy and wear resisting, not easy to be damaged, and has a long service life. 5、Easy To Use: This moving bouncing dog ball is waterproof, the shell is removable, if the surface is dirty, you can wipe or clean it with a rag or water, it is simple and convenient, and won't damage the machine itself. 1 x Smart Interactive Dog Ball Toy1 x Manual1 x USB Cable Item Type: Smart Interactive Dog Ball ToyBattery: 800MAH Lithium Battery (Shipped With Built In Battery)Diameter: Approx. 85mm / 3.35inCharging Time: 1.5HBattery Life: 4HWaterproof Level: IP54Material: PC, TPU