Normally, ducted quads are inefficient, heavy, and quick to drain batteries, but the Flywoo Cinerace20 V2 might have something special going on. While it doesn't do great in the wind, it does provide over 7 minutes of flight time when flying indoors using a high voltage 850mAh lipo battery. There are some annoying downsides with it, so it's not perfect, but we've been having a lot of fun chasing one another around, both indoors and outdoors. The LED lights make it easier to see in the daytime, and look great at night or in a dimly lit room.