The Phantom 3 Part 125 Remote Controller (4K) is the transmitter designed for use with the DJI Phantom 3 4K Quadcopter. It allows for full control of the aircraft, providing communication between the remote and the drone’s flight system. This remote controller features a built-in clamp for holding mobile devices, allowing you to view the live camera feed and access flight settings. It's specifically compatible with the Phantom 3 4K model and offers enhanced control for both flight and camera functions.