| BEST ON A COMPLETELY FLAT SURFACE FLOOR. 1 IT WILL NOT PERFORM WELL ON ANY TYPE OF CARPETING BATTERIES: THIS VEHICLE REQUIRES 3 “N°” SIZE BATTERIES, THESE BATTERIES ARE USUALLY AVAILABLE AT ANY STORE THAT SELLS CAMERAS AND OTHER PHOTOGRAPHIC EQUIPMENT. THE WRIST CONTROLLER REQUIRES 1-VOLT BATTERY WHICH IS MORE WIDELY AVAILABLE. Cy To insert batteries. Unscrew safety screw SITTING. FG BATTERY U REMEMBER TO TURN THE SWITCH OFF WHEN NOT IN USE.