1.supports the NTSC/PAL video output;
2.support 4 cameras at the same time display;
3.supports synchronous audio recording and video recording function;                      4.supports taking pictures function now and mirror function
5.support system information displayed on the screen (OSD) function;
6.support 32G mini SD high-speed card;
7.support real time clock display;
8.CMOS image sensor;
9.support can be set to any time mobile video detection function;
10.support circular coverage function;
11.support the single screen video can also record audio;
12.7 inch 800*480 HD resolution LCD display