Specification: Brand Name:HIFIONRC Item Name: 30.5x 30.5mm F4 FC40A 4in 1 ESC Stack F405 Pro F4 OSD Flight Controller MCU: STM32F405RGT6 168 M Hz Gyroscope: MPU6000 OSD: Betaflight SPI OSD UART: UART 1/2/3/6 BEC Output: 5V 3A9V 3A Input Voltage: 3-6S Lipo Blackbox: 16MB Firmware: Betaflight F405 LED: 4 Ways independent LED Pad, support WS2812 Programable LED Dimension: 36.5x 36.5mm Mounting Hole: 30.5x 30.5mm, M4 Weight: 6.6g - Onboard Voltage Sensor - Support SBUS, CRSF, IBUS, Spektrum 1024/2048, XBUS, Sum D Sum H Receiver, Built-in inverter - Support Support 3.3V Satellite Receiver ; PPM Receiver 40A BLheli_32 32bits 4 In 1 ESC Input Voltage: 3-6S Lipo Con. Current: 40A Burst Current: 45A (5S) MOS Model: QN3019M6 Firmware: BLheli_32 -Onboard Current Sensor - Support DShot 300-1200, Proshot 1000, Oneshot, Multishot, PWM (48 M Hz) Mounting Hole: 30.5x 30.5mm, M4 Weight: 11.9g Package Included: 1x F405 Flight Controller 1x 40A BL_32 4in 1 ESC 1x Cable 1x bag of Anti-vibration Standoffs