GoPro’s forthcoming (yet delayed) idiot-proof 4K consumer drone better be really good and priced really low, or products like this: the Mi Drone from Chinese smartphone maker Xiaomi could send GoPro to an early grave. The Mi is available with either a 1080P or 4K 360º camera and a range of up to 3km. Its 5100mAh battery gives you 27 minutes of flight time. The remote control links with your phone for a live feed view from the drone.