1. 8V~32V auto-adjust to wide voltage input                               

2. 4 CH 50frame, MJPEG compression format                               

3.4CH video input, 1CH audio input, 1 audio output                                                 

4. kinds of record modes: Manual, Time, motion, start                  

5. Support remote control, SD record                          

6. Video can Superpose date, time, speed, car number, brake, alarm                              

7.cars of 12V or 24V(8V-36V) can be applied