1) 4 CH mini bus DVR 2) H.264 compression 3) Dual anti-vibration 4) Built-in GPS module 5) CE FCC ... FRAME RATE100fps(PAL), 120fps(NTSC)VIDEO BITRATE1.98Mbps ~ 4.5Mbps, 4 level video qualityAUDIOAUDIO INPUT4 channelsAUDIO INPUT FORMAT20KΩ, RCAAUDIO OUTPUT1 ... , p-pAUDIO COMPRESSIONG.711STORAGESTORAGE1.8 inch Hard drive, SD card, external USB deviceFILE FORMATAVIINTERFACESENSORS1 speed sensor, 1 ir port, ...