Video input/output :bnc 4ch in/1 ch bnc out Compression method:h.264 Real time recording support :120fps for ntsc at cif image(100 fps for pal) Preview resolution:704x574(pal), 720x480(ntsc);playback resolution :4xcif 1 sata hard disk interface(support 2tb in total) Backup:usb2.0, and network 1rj-45 ethernet connector, static, dynamic ip and ddns, support internet explorer and special client software Multiple recording /search categoriers:date/time, event, manual, schedule, motion detection Support 3g mobile phone. 1xusb mouse, 1xir controller (w*d*h) 220 x 210 x 44 mm g.W: 2kg (w*d*h) 220 x 210 x 44 mm g.W: 2kg