GoPro hero 4 black on 3" racer - first tries

It was my first flight with gopro mounted on the top of my 3" racer/freestyle drone. First imperssion: Not bad! The setup: Realacc Blackbird 140 frame Racerstar 1407 motors Runcam Micro Swift camera Eachine vtx03 video transmitter Matek f4 flight controller 20/25Amp 4in1 esc + the essential GoPro Hero 4 Black in skeleton case (weight about 170 g) In summ. the drone weight AUW ~400g