Model: JJRC X21 Aerial Photo Optical Flow Folding GPS Brushless Drone Remote Control Frequency: 2.4GHz Body Battery: 2S/7.4V 1500MAH Operating Time: 18-20mins Remote Control Distance range: about 500 meters GPS: Dual mode (GPS/GLONASS Motor specification: 1503 brushless motor Propeller model: 5 inch folding positive and negative propellers Wheelbase: 200MM Headless mode: remote control button switching Camera: l 4K gimbal ascent and descent angle can be adjusted up to 90 degrees Visual function: optical flow positioning at the bottom of the fuselage Fence: height 100 meters / distance 300 meters adjustable Photo pixel: photo: 1920*1080 image transmission: 1080P/30fps Packaging: storage bag + mail order box Lights: front blue, back green (status display) Function Description: 1. Indoor air pressure fixed height, fixed point optical rate/point fixed outdoor dual-mode GPS/one-key return GPS; 2. The return settings are as follows: one-key return / low pressure return / runaway return; 3. Outdoor GPS automatic tracking/surround point of interest/point flight. Indoor optical flow fixed-point gesture photography 5. Equipped with a 90-degree stepless adjustable camera, using the Sony IMX179 camera to take 4K pixel photos and easily record 1080P high-definition video . 6.120 degree wide-angle HD WIFI, 1080P pixel, camera pixel: 1920*1080, 1080P/30fps real-time transmission, WiFi image transmission distance: 300 meters; Accessories: (4 AB fan blades + USB charging cable + screwdriver + charging box)