The NewBeeDrone BNF Hummingbird F4 V2.1 1S Brushless ELRS Whoop is perfect for drone enthusiasts looking for an exciting flying experience. Whether you're a beginner or an experienced flyer, this whoop is a great choice. With its built-in ELRS, you can enjoy seamless connectivity. The brushless motors offer powerful performance, and the upgraded MK3 camera allows you to capture amazing aerial shots. Technical specs include an STM-F411 MCU for the main controller preloaded with BetaFlight, BMI270 IMU, NBD OSD (Betaflight OSD Compatible), 2 usable UART Ports, Micro USB, 1S input, and 25.5x25.5mm installing hole.