It’s not only a toy, but also a companion: great toy and companion for your pets, when you are not at home or at work. When you leave, you can also leave the ball jump, roll and move, so she’ll be happy all day when we leave, she’s safe for you and your pet. Unique design with built-in gravity sensor: design with 360 degree automatic rotation by gravity sensor. In order to prevent the balls from rolling during transit, there is an internal switch, which controls the rolling by sensor of gravity. Once this switch is turned on, the ball rolls randomly for 30 minutes and rests for 15 minutes. If this ball will be hit by you or your pets again, it rolls. again lengthen! DURABLE & RECHARGEABLE, WATERPROOF RGB LIGHTS: Designed with USB charging hidden and inside, which is much more convenient and durable than batteries. The ball is waterproof. Easy for you to wash the ball, and keep the ball and your pets own company. FOR INDOOR AND OUTDOOR PLAY: Suitable for all indoor games, even on