... .4CH vehicle MDVR:GPS,WIFI 2.CIF/HD1/D1 3.Linux system H.264 car DVR 4CH vehicle MDVR ... the bus ,coach,logistics vehicle,freight vehicle,police car ,taxi,private car,money vehicle,fire truck,ambulance car,car ... alarm recording 10) Sensors & Alarm 11) Record vehicle speed and car ID synchronization with video and audio 12 ... 150*149*62(shock mount included) GPS and wifi full functions 4CH vehicle HDD MDVR