Crazyflie 2.0 Nano Quadcopter Kit Durable design. Easy to assemble and no soldering required. Supports expansion boards with automatic detection Supports flying from iOS and Android with Bluetooth LE support as well as from Windows/MacOSX/Linux with the Crazyradio or Crazyradio PA Tested to above 1 km radio range LOS with Crazyradio PA. Wireless firmware update On-board charging via standard uUSB Dual-MCU architecture with dedicated radio/power management SoC for advanced applications