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It is controlled with a remote but now people put Bluetooth and control it with their mobile phones. The quadcopter has a small range because it is not made for going high up in the sky it is just made for a limited range and a limited height. This helicopter is named quadcopter because quad means four and copter means a helicopter it has four propellers that's why it is called a quadcopter. My fathers brother has a quadcopter but that quadcopter does not take photos and record videos. Quadcopters are also called quadrotor and quadrotor helicopter these other names quadrotor and quadrotor helicopter have different style, different sizes and different shapes. The movies and films that we see are all recorded by quadcopter. Quadcopters are best helicopters.
