Xiaomi Mi Drone doing 5.2 КМ MAXIMUM RANGE TEST over water

This part is the footage from the return to base - both ways the drone traversed 10+ km in a little more than 17 minutes. I know some of you have pushed this drone a bit further than 5200 metres but this test was done over water the entire time with no possibility to land during emergency. It landed successfully on 19% remaining battery giving hopes that it can probably do 6 km in very good weather conditions and flying skills. I do not have video of the telemetrics but anyone interested can measure the distance in Google Earth entering "Varna, Bulgaria". This video was sped up 4x to make it easier to watch.