Designed the LED installation position in the four corners,sup port WS2812 Programable LED Supports serial receivers (SBUS, iBus, Spektrum, Crossfire) Support 3.3V Satellite Receiver High-performance / low-noise / high sensitivity IMU. BMI with 6-axis gyro and accelerometer. Support connect DJI HD air module Input voltage 12V-26V (3-6S) TVS protect,automatic voltage monitoring F722FC MCU: STM32F722RGT6 216MHz IMU: BMI270 (SPI) OSD: Betaflight OSD & DJI HD OSD (UART6) 6 hardware UARTS (UART1, 2, 3, 4, 5, 6) 5V 2A & 10V 2A Input Voltage: 3-6S Lipo Blackbox: 16MB Barometer: YES Firmware: SKYSTARS F7HD Mounting Holes:Standard 20mm/M3 square to center of holes 55A 4-IN-1 ESC voltage: 3-6S LiPo Con. Current: 55A Peak Current:70A greater than equal 10S Firmware:AM 32 Support:Dshot 600 Mounting hole:20x20 mm/M3 BEC:No The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 1 * F722 Mini Stack Flight Controller kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.