Frequency: 2.4GChannel: 4CHGyroscope: 6 axes areMotor: 8 * 23mm brushed corelessFour-rotor battery: 3.7V 1800mAh lithium battery (included)Transmitter battery: 3 x 1.5 AAA batteries (not included)Flight time: 15-17 minutesCharging time: 120-150 minutesRemote control distance: 80-100mFlight weight: 180g (including battery)Color: as shownCamera optional: 720P / 2.4G WiFi 1080P / 2.4G WiFi 4K HDField of view: 120 ° wide anglePixel: 720P-picture / video: 1280 * 7201080P-picture: 1920 * 1088, video: 1280 * 7201080P-Picture: 1920 * 1088, Video: 1920 * 10804K-picture / video: 3840 * 2160 (support IOS 6 or higher version and Android high-end system)4K-picture / video: 2560 * 1440WiFi distance: 50-70mThe size of the quadrilateral: 22 * ​​22 * ​​7.5cm (the arm is not folded, with prop cover)15 * 11 * 7.5cm (with arms crossed) 15 * 11 * 7.5cmFeature:-With foldable arms, it is compact and easy to carry.-With the function of altitude hold mode, it can provide stable flight.-With wifi function, you can connect APP, APK system to take pictures, record videos, and transmit images in real time through the mobile phone camera.-There are 3 cameras to choose from. With the help of 720P, 1080P or 4K HD wide-angle cameras, you can provide a wide range of high-definition pictures and videos.-Using headless mode, there is no need to adjust the position of the aircraft before the flight.-With one-key return function, you can easily find your way home.-Ballistic flight. Draw a flight path on the screen, the drone will fly autonomously in the specified direction.-Using 3.7V 1800mAh battery, the flight time is up to 17 minutes.-Anti-jamming using 2.4GHz technology.-4 channels, can be up, down, forward, backward, fly on the left, fly on the right and roll 360 °.-6-a-xis gyroscope, flight is more stable and easy to control.-It has 3 levels of flight speed switching, which can make flying more interesting.-The four-rotor fuselage is made of high-strength and engineering-resistant plastic, which is lightweight and durable.-Please note: If you want to buy a 4k lens, due to the large amount of information, the memory card needs to use a high-speed card or brand card.Functions: up / down, forward / backward, left / right, side flight, three-level flight speed, 3D scrolling, LED lights, headless mode, one-key auto return, altitude hold mode, WiFi FPV Trajectory flight, camera / videoPlease know: If you want to buy a 4k lens, due to the large amount of information, the memory card needs to use a high-speed card or a brand card.E520 can use the remote control and applications to take off with one click.APackage Included:1 x RC quadcopter1 remote control1 x 3.7V 1800mAh lithium battery1 x USB charging cable4 protective covers2 spare blades1 x screwdriver1 x User Manual