Note Due to the real-time live broadcast function, it depends on the network status. Full hd 4g car dvr dashboard camera logger recorder gps dashcam rearview camera 264 storage tf card, maximum support 128gb microphone built-in highly sensitive microphone speaker built-in high-fidelity mono 1.5w/8r speaker button power button, camera button, reset button reset function support power supply dc 12v, for bmw line input voltage 12v, support wide voltage range 9-16v acc support acc detection photo format jpg video format ts video encoding h.