Features:

(1) High quality color video at 30/25 fps recording/playback quad mode
(2) Optional: NTSC and PAL system
(3) Recording mode: auto record, manual, schedule, motion detection
(4) Motion Detection: Area selection & sensitivity adjustment for each camera
(5) Recording frame rate: NTSC max. 30 fps (quad) PAL   max. 25 fps (quad)
(6) USB:Optional
(7) With video loss alarm function
(8) Chinese/English menu switchable

Compression Format Modified MJPEG
Video Input / Output BNC 4-ch input / 1-ch output (Composite) 
Display Frame Rate NTSC: 120fps 4x30fps
PAL: 100fps 4x25fps 
Recording Frame Rate NTSC: Max. 30fps 4x7.5fps
PAL: Max. 25fps 4x6.25fps
 
Specification:
1) Recording resolution: NTSC: 320x112, 640x224 PAL: 320x136, 640x272 
2) HDD:  Removable.supports up to 250GB HDD 
3) Recording Time NTSC: 155 hours with 120GB HDD @ 15fps
    PAL: 194 hours with 120GB HDD @ 12fps 
4) Recording Mode: Auto-record, Motion Detection, Manual, Schedule 
5) USB: Optional
6) Power Adapter: DC 12V/5A 
7) Dimension (LxWxH) 200mm x 132mm x 80mm 
8) Gross weight:3.5kg ; Net weight:1.9kg