This is the Hobbywing XRotor Nano-Micro 4-in-1 ESC and Flight Controller Combo.

Features

Flight Controller

• STM32 F405 MCU allows the FC to run the PID loop time and gyro with higher frequency.
• SPI Sensor MPU6000 includes an accelerometer and a gyro.
• Onboard OSD microchip which supports the DMA mode allows users to adjust its parameters via the Betaflight software. (Note: the OSD is controlled by the F4 MCU.)
• The FC which supports Betaflight firmware & allows parameter adjustment via Betaflight software is more applicable to FPV race.
• TF-card which can record and save more flight/black box data allows users to adjust the setup of their aircraft easily.
• Compatible with various receivers like SBUS, SUMH, SUMD, SPEKTRUM1024/2048, XBUS, PPM and etc.
• A LED strip signal output port allows users to adjust the color & flash mode of the LED strip via the FC.
• Volt/Amp monitoring port allows users to check the battery voltage ( VBAT+ port ) and current (CRT port) (extra current meter is needed).
• Buzzer output port allows users to connect external buzzer(s) to the FC for warning or informing the flight status of the aircraft.
• Micro USB port allows users to connect the FC to a PC to flash firmware and adjust parameters)

4-in1 ESC

• Compact design for easy installation and neat wiring.
• Amp/Volt monitoring port allows flight controller to monitor the voltage & amperage in real time (on condition that the FC supports the function).
• EMF8BB2 chip with an operating frequency of 48MHz for great performance.
• BLHeli-S open source program supports firmware update or ESC programming via throttle signal wire and all the functions of BLHeli-S.
• Damped light mode for a more rapid motor response.
• Regular PWM throttle mode, OneShot125 throttle mode, OneShot42 throttle mode, and MultiShot throttle mode are supported.
• Dshot150/300/600 digital throttle mode is supported.
• ESC supports a throttle signal of up to 621Hz in regular throttle mode and is compatible with various flight controllers.

Specifications

Flight Controller

• Model: Nano F4 Flight Controller F4
• Application FPVs with 130 Diagonal Wheelbase or below
• FC Programming supported: ProgrammingBetaflight/Cleanflight-configurator
• Compatible with (Modes) PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600, Dshot1200, Proshot1000
• Compatible with (Transmitters): PPM, Spektrum, SBUS, SUMD, SUMH, XBUS, IBUS, JETIEXBUS, CRSF, SRXL
• OSD: Built-in
• Voltage Monitoring: Supported
• Current Monitoring: Supported
• External Buzzer: Supported
• LED Control: Supported
• BEC: 5V @ 1.5A
• USB Port: Micro USB
• Size/ weight: 27x27mm / 3.3g
• Mounting pattern: 20x20mm

4-in-1 ESC

• Model: XRotor Nano 20A 4in1 BLHeli-S DShot600
• Application: FPVs with 130-280mm Diagonal Wheelbase
• LiPo Power input: 2S-4S
• Cont.Current: 20Ax4
• BEC Output: NO
• Input wires: 16AWG-85mm* (Red/Black)
• Output Wire: No wires but solder tabs
• Connectors: (In/Out) XT60 (w/ Wires Soldered on) /no 
• Weight / Size: 6g / 32x31.9x5.8mm
• Firmware: BLHeli-S A-H-50 16.5
• Throttle Calibration: Supported
• ESC Programming: Stick Programming, BLHeliSuite
• DEO: Supported
• OneShot Mode: Supported
• Timing: Supported
• Motor Rotation: Supported

Includes

• 1x XRotor Nano F4 Flight Controller
• 1x XRotor 20A 4-in-1 ESC
• 1x FC Cable
• 1x 3pin Cable
• 2x Wire Leads
• 4x Anti-vibration Standoffs and Rubber Grommets

Downloads

Downloads and setup information can be found here