HUBSAN H109S X4 Pro 5.8GHz FPV With 1080P HD Camera 6 Axis Gyro and 3 Axis Gimbal Rotation GPS RC Quadcopter High Edition The Duo design amplifies the best performance of RX (using Omni/ Linear Polarized antennas at the same time). Conceal Input ports design, DC and V-in input ports are just beneath the goggles body. The cable mount of cable VR008 used for placing and protecting power cable better. VR008 built-in two antennas with amplify circle and has better 5.8GHz RX performance. With full charge, the 2S (7.4V) 1000mAh battery can work for about 5 hours.