1. Compression Format: Modified MJPEG 2. Video Input / Output: BNC 4-ch input / 2-ch output (Composite) 3. Display Frame Rate: NTSC: 120fps 4x30fps/PAL: 100 fps 4x25 fps 4. Folding 10.4" Color LCD monitor 5. Optional: NTSC and PAL system 6. High quality color video at 30/25 fps recording/playback quad mode 7. Recording mode: Continuous, Motion Detection, Sensor activated 8. Removable HDD rack, supports up to 250GB HDD 9. Display resolution: NTSC 720x480; PAL 720x576 10. Recording resolution: NTSC 320x112, 640x224/PAL 320x136, 640x272 11. PC Backup via USB 2.0 port 12. With video loss alarm function 13. With power recovery auto-recording function