For those who want to try the drone indoors, you need to know that, unlike the Spark, it does not hang like a stone. With what it is connected - it is difficult to say. I'm assuming it's because of the much more powerful engines that create a lot of air movement. Therefore, the drone sways slightly and in some cases even begins to drift. For indoor flights, propeller guards are a must have. For the same reason, if you need a selfie drone, then the Spark is more suitable. The second point is batteries. The 3 that came with my Fly More Combo lasted ~60 cycles, after which they swelled up.