Cute and enticing self-propelled mouse toy for cats For hours of wild and entertaining fun Self propelling wheels Simply rev up the wheels and let it go Soft, furry coat is warm and gentle on cats For hours of fun and exercise Batteries not required Pink/Blue This speedy little mouse is designed to zip across the room and entice your cat to chase it wildly. The mouse has self-propelling wheels that can be revved up to generate the power to make it zoom forward. Simply rev up the wheels and let it go. Then watch it zip across the room as your cat tries to hunt it down. This is an excellent toy for hours of fun and exercise. Colors might be different dues to camera exposure.