Smart Interactive Pets Ball Automatic Rolling Ball Toys for Pets with USB Rechargeable Feature: You could use the remote control to activate five light modes(redbluegreenRGB switchingRGB flashing) and two motion modes(bouncing and rolling) of the interactive ball. It s shinning irregular moving will attract your pets attention and entice your pets to play with it,provide hours of fun exercise self-amusement for health care,elimination of boredom and pet depression. Built-in gravity sensor,makes the ball rolling randomly,auto changing its direction when hitting a wall,chair,door,etc. Smart companion function: automatically play for 30 minutes and rest for 10 min,then ready to the next round, which could allow your pet to play with it without your participation or even when you are not at home. Equipped with micro USB port DC 5V 1000mAh lithium battery,which makes the ball to be charged easily ,instead of spending your money and hassle on batteries. Only taken 1.5 hours to be charged fully and then it could work for 5-6 hours. The outer shell is made of durable food-grade BPA-free TPU PC material,which is bite-resistant,sturdy safe for keeping it in your pets mouth,wont be easily damaged,scratched or bitten by your pet. The 3.5 inch(9cm) diameter cant be swallowed by accident. The 2 halves of shell are seamlessly buckled together,which makes the whole ball washable easy to clean for sanitary purpose.Never need to worry about making your pets sick with unhealthy or dirty toy. urls. Message if you have questions. Package Include: Smart-Interactive-Pet Ball x1 USB charging cable x1 Instruction manual x1 Remote control x1