Specifications:

MCU: STM32G474CE, 170MHz Cortex-M4 , 512KB Flash
IMU: ICM42688-P
Baro: SPL06
Blackbox: 128MB Flash
3x UARTs (1, 2, 3)
1x I2C
8x PWM (4x Servos, 2x Motors, RPM, LED)
2x ADC (VBAT, Current)
USB Type-C(USB2.0)

Electrical characteristics:

Input voltage range: 5.4V~30V (2~6S LiPo)
No current sensor integrated, support external 3.3V based current sensor.
Battery Voltage divider 1K:10K (Scale 110)
BEC 5V 2A for FC and peripherals
BEC Vx 5A cont. 8A Peak for servos (5V, 7.2V option)
3.3V 300mA

Firmware/config:

Rotorflight / MATEKG474HELI

Physical:

Mounting: 20 x 20mm, Φ4mm with Grommets Φ3mm
Dimensions: 38 x 26 x 13 mm
Weight: 15g (w/o pins)
3D step file

Including:

1x G474-HELI
1x PicoBlade 1.25mm Servo adapter (M2/S2 servos)
1x 20cm JST-GH-4P to JST-GH-4P cable
1x 20cm JST-GH-6P to JST-GH-6P cable
Dupont 2.54 pins (Board is shipped unsoldered)