Or Xiaomi products are simply better than GoPro's. I was in the market for a 4K action camera and ended up buying the Yi 4K because the GoPro model only offere

Or Xiaomi products are simply better than GoPro's. I was in the market for a 4K action camera and ended up buying the Yi 4K because the GoPro model only offered interpolated 4K, while the Yi offers full 30FPS 4K. I won't say the Yi is perfect. The Xiaomi app stopped connecting to the camera after an update (and hasn't connected successfully since), and early firmwares had issues with 4K recording randomly stopping. But they've since fixed nearly all the stability issues with subsequent firmware releases. Overall the camera is loads better than anything that GoPro had on the market at the time, and the camera only cost me $250 with accessories (waterproof case, spare battery), plus $70 to DHL for customs and duties. I'm not a Xiaomi shill, I'm just very pleased with the product I bought.