great little helicopter, quite handy with the remote control. he is strong enough and is not broken despite good falls on asphalt! the idea of the double battery allows to play longer. one battery lasts 15 or 20 minutes. by cons it is very light and can fly very high in the sky (at least 7 or 8 meters). except that at this height there it is shipped by the wind and can go very far without that we can master it. Morality, our helicopter propellers fly its propores somewhere ....