This is an all-in-one 20×20mm mini quadcopter stack with 4 in 1 ESC board, Omnibus F4 flight controller and 5.8GHz 25/100mW switchable 40-channel video transmitter. On the bottom of the stack is a powerful 4-in-1 speed controller supporting 2-4s and up to Dshot600 with blheli_s firmware. The ESCs can support 10 second bursts of 25A and continuous currents up to 20 amps. The FC sits at the centre of the stack using OMNIBUS F4SD and has an integrated 5.1V/1.2A BEC. It is an STM32 F405 flight control board with integrated OSD and MPU6000 gyro. There are SBUS/PPM and DSM ports for radio.