... mirror monitor with GPS navigation ,Bluetooth,DVR,Built in 2.4G signal receiver .ARM9 CPU,533MHz. (MT3351,ARM1176JZ-S Core) 1 ... player support(MP3/MP4)5) Support FM Transmit6) Li-ion battery built in, charge through outside DC 6V 7)Operation System ... rearview mirror monitor with GPS navigation ,bluetooth,DVR and 2.4G signal receiver