My review of the Syma Helicopters that I bought from Amazon.com.
I bought this helicopter along with three other helicopters. Three Syma brand copters from Amazon and one off brand helicopter at Walmart. I ordered multiple helicopters because the only ones I have flown have been 2 channel and if one broke I would have backup.
I ordered the Syma S107 and S105 at the same time, and the S107 arrived first and the S105 arrived the next day. On my first flight of the S107 I was surprised how stable and smooth the flight was. The box says 14 and up but I think anyone could control this helicopter. It goes up, down, left, right, forward, and backwards, all at a balanced speed thats good for indoor flight. It is not too slow to be boring or too fast that you can’t controll it. The trim button on the controller is pretty much not needed because it does not spin out of control. I still have not adjusted the trim after about 20 flights.
Also, both Syma helicopters are VERY durable since they are made of metal and hard plastic. The blades are also durable. There are some differences in the S107 and S105. The S105 is slightly wider and slightly longer. It also has two LED lights on each side and one in the front, a total of 6, which can be cool or annoying, it just depends on preference. The s107 has a single light on the front. The S105 seems to spin out more than the S107 and is more difficult to trim. This is an obvious flaw that was addressed with the newer S107, because it does not spin out at all. They both can be charged with the controller or through a USB port on your computer which is good if you don’t want to waste your batteries on your controller. They both use 6 AA batteries in the controller.
Both helicopters are extremely durable and have been crashed several times. My only complaint with them is the flight time is only around 5 minutes. Overall I would recommend the S107 over the S105 because of the trim issue with the S105, but both are excellent helicopters and they are a very good price.