1)4CH 720P AHD(or Hybrid, 1&2CH 720P, 3&4CH D1)

2)1TB HDD support   

3)USB slot for easy downloading              

4)G-sensor support                                           

5)2 way intercom support

6)GPS tracking(optional)

7)3G/4G transmission(optional)

8)WIFI support(optional, 150M module)

9)6 Alarm input&2 alarm output support   

10)RS232/485   

11)RJ45 lan port

12)Remote engine stop

13)Mirror recording in SD card

14)Patent UPS power-off file protection

15)Built in heater(optional)

16）pre-allocate DVR Special File System Technology