This HAKRC F4126 F411 2 - 5S AIO flight controller is designed for hobbyists who love to build and fly ultralight whoop or toothpick - style drones. With a size of 31x31mm and a weight of 8.5g, it's easy to integrate into your builds. It comes with a 20A 8 - bit 4 - in - 1 ESC and supports multiple power inputs from 2S - 5S Lipo. Whether you're a beginner or an experienced flyer, this product offers great features for an exciting flying experience.