Main control: STM32F405 Gyroscope: ICM42688P Barometer: Support SPL-06 OSD: Support (AT7456E) BEC: 10V/2A, 5V/2A UART port: 6 Black box: onboard (16M flash memory) Number of supported motors: M1-M8 Firmware name: BETAFLIGHT: SOLOGOODF405 Input voltage: 3-6S lithium battery (11-30V MAX) Output voltage: VBAT Installation hole: 30.5x30.5mm (4mm aperture) Flight control size: 38.5x38.5mm LED status: blue: gyroscope status, green: 3V3 indication, red: 5Vbec indication, white: 10Vbec indication for /Vista: Support/6pin BLS55A 4-in-1 ESC SPEC: Firmware: BLHELI-S: J-H-30-16.7 Continuous current 55A Maximum current 65A Electric dispatch protocol support: DSHOT300/600 Input voltage: 3-6s Galvanometer: Yes diode protection: Yes External capacitor: 1000UF high-frequency electrolytic capacitor Installation hole position 30.5x30.5mm (4mm hole) Size: 41.5mm x 42mm (The product printed words depending on the batch, but this does not affect use) Color:As Shown Material:PCB Package Contents: 1 * FPV Stack Kit(The color of the attachment is random, and the designation is not accepted) 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.