... ,Best choice for beginner MJX F47 2.4G 4ch rc Single Blade helicopter 1, Function:up&down, go forward&backward, turn right ... -8 minutes;5, Remote control distance: Approximated 30 meters;6, Remote control batteries: 6*1.5V(AA) batteries (not included) Quantity: 12 ... .7 * With single-rotor design and built-in gyro,the helicopter is more flexible and much stronger. * New designed structure makes ...