1) 4 channel video and audio recording
2) D1 resolution for each channel (704x576) H.264 compression
3) Up to mega-pixel for 4 channel (1280x1024)*30fps(NTSC)
4) Built- in GPS module
5) Support WAN Port, RJ45
6) Support external WIFI
7) Max 2.5 inch  1T HDD,64G SD card, USB port