Automatic cat teasing ball self-happiness relieve boredom toys interactive cat toys LED lights non-toxic and durableAutomatic moving ball interactive cat toy LED light + accessoriesInteractive Automatic Moving Cat Ball with built-in battery that charges via USB cable.After turning it on with the button, the toy starts to move automatically on the floor (thanks to the rapid 360 rotation), escaping and changing direction every time it encounters an obstacle.The set also includes a pen and a bell that can be attached to the ball. Built-in battery, charging via USB cable - the working time is about 3-4 hours after charging, The ball moves on a variety of surfaces, both smooth and rough,Durable housing made of non-toxic ABS plastic,Bells or feathers can be attached to the ball (both elements are included in the set),Lighting effect: red laser light (light up after pressing the button once); light color change (light up after pressing the button twice), Diameter: about 6.4 cm