S138 Drone 4K Dual Camera Wide Angle Obstacle Avoidance Optical Flow Positioning Brushless RC Drone Foldable Quadcopter BoyToy Description: Size: Fold: 13×9×7.5cm spread:28×23×9cm Color: black, white Flight performance: 360 ° obstacle avoidance, optical flow positioning, brushless power (level 7 wind resistance) electric dimmer, one button tumble, headless mode, photography/video, emergency stop, adjustable speed, one button takeoff/landing, gravity sensing, headless mode, trajectory flight, lens switching Lens parameters: electric condenser (90 ° remote control), bottom mounted HD camera Battery: body battery: 3.7v large capacity battery Remote control battery: AA * 3 (not included) Control mode: handle remote control, mobile phone remote control Endurance: about 20 minutes Remote control distance: 2.4Gwifi signal (flying about 200m) Specifications: 1FunctionOne button start, brushless motor, 6-level wind resistance, obstacle avoidance in all directions, electric dimming camera, with optical flow positioning, camera switching, aircraft folding, 6-way with gyroscope; One button takeoff, one button landing, ascending and descending, forward and backward, left and right side flight, steering, headless mode, one button tumble, one button correction (with camera, you can add functions: gesture photography, video recording, headless mode, emergency stop, trajectory flight, gravity sensing, automatic photography) 2Brushless motor360 sensing obstacle avoidance, high-definition electric adjustment dual camera 3Optical flow positioning hoverSuitable for indoor/outdoor flight 4Remote control of high-definition cameracan present more excellent highlights and shadow details with high quality and support remote 90 ° control. 5Powerful battery module designIt is easy to install and take, plug and play, no need to disassemble the body, upgrade the large capacity, and have a longer life. Package Included: Aircraft * 1 Remote control * 1 Battery * 1 One set of standby fan blade USB cable * 1 Screwdriver * 1 Instructions * 1