HEXBUGS feel their way around sensing objects in their path and HEXBUGS feel their way around sensing objects in their path and avoiding them. And they can hear! You control where they scurry through a hand clap, loud noise or table slap. Collect all five models today: Size 2.5"L X 2.3"W X 1.3"H The bug will travel in a straight line until it hits an object or hears a loud noise. Upon contact or noise, the bug reverses in a half circle left, then moves forward again in a new direction. You can make noise continuously to back up the bug until it is aligned in the direction you wish. Batteries 2 button cells AG12 (L1142) (included) WE CAN NOT GUARANTEE COLORS ORDERED BUT WILL DO OUR BEST. IF MORE THAN ONE IS ORDERED WE WILL TRY TO SUPPLY DIFFERENT COLORS.