This 4 in 1 ESC features an EFM8BB21F16G MCU with a pipelined 8-bit C8051 core, dedicated high frequency driver and dual ways signal transmission. It is paired with an F3 flight controller, OSD and current meter, along with BLHeli-S firmware and support for PPM, PWM, SBUS, Oneshot125/42/Multishot, and Dshot150/300/600.