GoolRC OCDAY 2-Axis Brushless PTZ Control Panel Gimbal for Gopro3 4 DJI SJ4000 SJ5000 Aerial Photography Black Upgrade the roof, increasing the head hook hole, easy to use PTZ hook You can use the remote real-time control of pitch and roll angle Extended function: to set flip, installed on fixed win Handheld PTZ can be changed; (user to modify, we does not provide technical support) Can be upgraded to three PTZ (user to modify, we does not provide technical support)