The first item didn't work right away even after I read all the instructions and watched the tutorial video. The SECOND flew perfectly for the day. On the second day of flying he fell into the grass, into the short grass, and didn't fly anymore. It wasn't an accident. It seemed wonderful. Landed on landing gear. As long as it doesn't fly anymore. Every time you tried to fly it, it just fell onto its side. It was like the two propellers on the other side weren't working, but they all turned normally. give up and come back Not a quality product.