HAKRC MiniF4 Flytower F4 Flight Controller for RC drones AIO OSD BEC and 20A BLheli_S ESC 20x20mm 

Description:
Mini F4 flight controller (top layer)
Product Name: STM32F405 F4 Flight Controller AIO OSD and BEC
Input voltage: 2-4S Lipo
- Built-in original Betaflight OSD
- With 5V @ 2A BEC output
- No black box
- Support BLHeliSuit settings
- Also supports Cleanflight and INAC to falsh firmware
- Support PPM, SBUS (RX1), IBUS (RX6), DSM2 (RX6) receiver
Firmware: BetaFlight 3.20 SD
Size: 27x25mm
Mounting hole: 20x20mm
Net weight: 3.3g

20A 4 in 1 BLheli_S ESC (bottom layer)
CON. Currently: 20A
Peak current: 25A (5S)
BEC: No
Lipo: 2-4S
Programmer: Yes
Weight: 4.8 grams
Size: 27x31mm (PCB)

packing list:
1x F4 flight controller board
1x 20A 4 in 1 ESC
3x cable
1x bag screw"