4CH 3G Mobile DVR for Bus, Taxi,Police cars 3G SIM card supported Back up videos ... through internet H.264 expressive 3G Mobile DVR for Bus, Taxi, Police carsFeatures:3G SIM card supportedBack up videos through ... 4CIF,CIFor QCIFPlayback Frame ratePAL: 1~25 fps ,NTSC: 1~30 fpsRecord band rate16K~2M adjustable,Customizable (unit:bps)Audio Input4ChAudio ...