Quadcopter camera drone rc function tapfly protection return home positioning glonass gps flight time 30 min maximum speed 72 kmh climb rate 6 ms descent rate 4 ms max altitude 6 000 m weight 1 368 g diameter 350 mm wind resistance 10 ms colour white photo resolution 20 mp video resolution uhd 4k 4096x2160p framerate 4k 60 fps gimbal 3 axis gimbal iso range photo 100 12800 iso range video 100 3200 picture formats jpeg