... 4gb map Product Description CST-5808 5 inch Car rearview mirror monitor with GPS navigation ,bluetooth,DVR and 2.4G signal ... Car rearview mirror monitor with GPS navigation ,Built in 2.4G signal receiver .ARM9 CPU,533MHz. (MT3351,ARM1176JZ-S Core) 1) 5 inch TFT-LCD ... NET6.0 8)Support car DVR function and car rear mirror CST-5808 5 inch Car rearview mirror monitor with GPS navigation ,bluetooth,DVR ...