DJI are one of the world's biggest and most respected manufacturers of quadcopters, from prosumer models like mine all the way up to high end commercial aircraft for professional broadcast. My purchase is a marvel of modern technology.
It can fly up to 25 minutes on a single replaceable battery, 1.2km from the point I am standing and up to a limited 120m above ground level. It contains a 3 axis gimbal that stabilises the 12mp/4k Sony Exmor powered camera.
The radio control unit allows you to mount a smartphone or tablet and watch live feedback from the copter as well as control many of the advanced flying and shooting options.