Property me the Syma brought X5C 6 Axis Quadrocopter in October. Only after 2 weeks, the order was there. Un of content also produces from the first experiments in Schlafzimer and outside her everything was OK. Failed until suddenly a motor. He no longer went. Since I have been in contact with the Coshinegroup (the dealer). Because Amazon was only the sales platform. After much back and forth and a description with pictures of the problem you sent me a defective spare engine to, I can judge, because I mean Quadrocopter to repair (installing the spare engine) my brother (of a trained electronics engineer and private is a good tinkerer) have given and meant you were probably deliberately sent a junked motor defects, My brother had the engine accurately and noticed that there is a defect in it is he could possibly repair. Even the built-in motor, he could temporarily fix the defect indeed only, but after a two starts the engine stopped working again. I would say poor workmanship. Zuminidest unfortunately I have a very bad experience. Although I must say that the shots that were good he was, but a lot of fun, I have not had with the, and get involved again in a spare engine or Ersatzquadrocopter of the Coshinegroup I do not, because I'll prefer one of the other more positve reviews would have.