Size: 51mm x 51mm x 12mm\nWeight: 21 gram (Inc Piezo buzzer)\nIC: Atmega\nGyro/Acc: InvenSense Inc.\nAuto-level: Yes\nInput Voltage: 4.8-6.0V\nAVR interface: standard 6 pin\nSignal from Receiver: 1520us (5 channels)\nSignal to ESC: 1520us