... 264 Car DVR with 3G and GPS and wifi Compression:PAL:50f,NTSC:60f,4channels H.D1 independent and real-time recording ... Specifications:MPEG4 Car DVRTS110Feature: Embedded Linux system MPEG2/MPEG4 processors,Double MCU ... Audio output: 1channel,Linearity PWL:1.0vp-p , Impedance: 600ΩReal-time surveillance : PAL: 50 fps , NTSC: 60 fps ,synchronous ...