VIFLY R220 is a 100% ready-to-fly FPV Racer, no assembly, no calibration, just fly it out of the box. We employed a brand new unified body design which makes the drone a compact design with an amazing anti-crashing performance. We have also added many smart designs such as a LED display to show the battery voltage and channel information, one button to switch the video transmission channel and output power, a DVR port design, warning buzzer, etc. All of these features together make the FPV Racer drone super easy to fly. Check the page here and find more details, http://www.viflydrone.com/