Creative & Funny - It will escape quickly when your pets are trying to touch the cute toy, at the same time, there is flashing LED light along with lively “huhu” sound, brings much fun. It will get into the sleep mode automatically when it is left alone Irregular Moving - Random unpredictable movements easily entice your kitty/dog, built-in high-speed universal wheel will randomly turn or retreat when hitting an obstacle quickly. Get Rid of Loneliness - When you are away from home, the rampage moving wicked ball cat toy keeps your babies entertained Keep Your Cats/Dogs Fit - Easily arouse dogs’ or cats’ interest to chase and exercise, keeping cats physically fit and mentally active. Eco-friendly ABS - Made of high quality eco-friendly ABS that are Safe and Non-Toxic. Battery requirement: 3 x AAA batteries (1.5V). Specifications Best Companion for Your Furry Pal ? Product size: 7.5x5cm / 3.0x2.0in Package size: 18.5x13x6cm / 7.3x5.1x2.4in Material: ABS Power supply: 3 X AAA batteries