GT5 2.4G WIFI FPV with 4K Dual Axis Pan Tilt HD Camera, 14mins Flight Time, Brushless Foldable RC Drone Quadcopter RTF Description: Pressure sensor: height adjustment Positioner: Optical flow positioning Motor: 1503 brushless motor Electrical regulation: 4000/KV Image transmission and reception method: 2.4 GHz Wi-Fi Lens: Self-stabilizing electronic anti-vibration lens Remote control battery: AA * 3 to be purchased separately Smart lithium battery capacity: 3.7V 800mAh Control distance (interference-free and without occlusion): 100M Flight time: Approximately 14 minutes Charging time: approximately 1 hour USB charging: 5V