The FETtec FC G4 v1.7 features the latest STM32G4 processor. Providing unparalleled processing power to your aircraft. Along with an IIM-42652 SPI gyro, two 5v BECs, 6-27V (2-6S) power handling, and a host of other features, the G4 from FETtec is on the cutting edge of Flight Controller technology.