STM32F405 FC
(better than F411), onboard 4-level battery life indicator, 4GB
Blackbox SD card slot for your flight logs, 4 groups of LED strip pads,
complete with a DJI plug* for your digital quad, and built-in Bluetooth
for wireless configuration on the SpeedyBee app.
Don't forget about the powerful 50A 4-in-1 ESC, built with TVS
protective diode + Japan made TDK SMT capacitors + external
1000uF low ESR capacitor, everything is for durable build and
smooth flight.