Description:1. Support IR remote control: convenient to operate.2. Special design of encryption to protect recording files.3. Support wide range of voltage input from 8V to 33V DC.4. Support four 4CH connector video & audio input, one channel AV connector video & audio output.5. SD card (not included) data record storage (up to 128GB), more convenient & vibration-proof than hard disk version. Feature: Compatibility All Kinds Of Cars Operating Language Chinese/ English Video Input 4CHVideo Output 1CH CVBS/VGAVideo Standard PAL, NTSC, 720 P Video Format AVIImage Compression H.264 Audio Input 4ch, Aviation Plug Audio Output 2ch 1v-2v Image Format CIF/HD1/D1 Recording Storage SD Card (max. 128gb) Voltage Input 8-33 V Voltage Output 12 V Package Included:1 X Video/ Audio Recorder 1 X Remote Controller 1 X Power Input Cable 4 X Audio/video Cable 2 X Keys 1 X User Manual