The flight characteristics I can only say that I was somewhat disappointed with the first flight since it is not as easy as I thought but after the 5th battery charge I slowly get the hang of, and I'm getting better and it's really fun.
So do not be the first flight and the first crashes spoil the mood.
A little tip ... if the Quadrocopter despite eintrimmen draws repeatedly in one direction is possibly, the gyroscope be defective. I had unfortunately had my first model also. Exchanged directly and noticed the difference.