Great grip of our interactive cat toys - Built with stronger power inside, make ball running, swinging, slipping easily on floor, or carpet. it has no problem transitioning from tile to thick wool rugs. Automatic on/off:Works 5 minutes and goes into sleep mode if cats aren't playing . Motion activated cat toys:When cats interested in game, they could poke at it and balls running. automatic cat toys interacts your cats even you are out. Intelligent running ball: The ball running go ahead, or back, it change direction when hit to wall. Balls swinging, slipping and not easy be stuck in corners. Rechargeable battery: Type c charging cable come with package, easily fully charge within 2-3hrs. cat toys ball built in super driver Add the rope on: Screw up the rope on, rolling ball with a snake bring more funny to kittens. Colour:Red Material:Silicone Package Contents: 2 x Pet toy ball 2 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.