Thank you for choosing the EDGE 540 ARTF by SEAGULL MODELS. The EDGE 540 was designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is easy to fly and quick to assemble. The airframe is conventionally built using balsa, plywood to make it stronger than the average ARTF , yet the design allows the aeroplane to be kept light. You will find that most of the work has been done for you already.Flying the EDGE 540 is simply a joy.