Ardently desired by my son (8J), he got this UFO. Tried the first time, the part flew ca.5min. Everything was wonderful, brief joy short, but some fun was there. In the second Start the UFO became acquainted with the room lamp, which may be to accept at applicable only in ducks Innenbreich flying objects (and where were the sensors?). The UFO made a crash landing and has immediately reingehauen rough quirks with the propellers in polystyrene frame. Since then, the thing flies totally uncontrolled across the room, jumping on the ceiling along and is no longer controlled on rudimentary hand control. For that much money I would have hoped for more stability / quality, at least it could do with more than just a crash. Would not recommend !!!