Ball New Design Pet Dog Toys Interactive Toy Features: Hunting and Swatting;Offer much and entertainment to your cats and dogs!Watching Playing and Laughing;Bring more laughter and happiness to you and your family! 360 Degree Automatic Rolling，Convenient USB Charging，Innovative Design，Ecofriendly Material，Multicolor RGB LED Lights，nteractive Toy between You and Pet，A Companion for Pet When you receive the new ball, it’s maybe out of power. So please charge the ball first. Please charge with the USB cable we provide. Please put down side of the ball on the floor and try pushing the ball if it doesn’t move when power on. The and charge port are inside the ball, please open the ball outer case to turn on/off the and charge the ball. Product Description: Specification: Diameter: 2.75 inches Power Input: 5V Current Input: 350 Mah Rated Voltage: 3.4V - 4.2V Package included: 1xToy Ball; 1xUSB Cable; 1xUser Manual