The brand of Amazon invented most in the world of Dron for delivery of commodities!
Dron on the name of PRIME AIR can walk up a height an about 122 m and deliver a parcel weighing not more than 2,3 kg.
Also INVENTION can for 30 minutes fly 16 kilometers, and weighs 25 kg.
So now above the USA and Great Britain such fly here "birdies".