2 X 2 TB total 4 TB. Capable X2of dublicate drive recording hard drives. 4 audio inputs 2 way audio's.2 usb and maybe more see pics. Used condition fully working has a minor scratch on top of unit but doesn't effect the unit. Suitable for home/ office work shops etc. The item "X 4TB ALIEN MAX Hybrid DVR 16 CHANNEL CCTV/ Camera DVR RECORDER 4tb RP £1299 hdd" is in sale since Saturday, May 4, 2019. This item is in the category "Home, Furniture & DIY\Smart Home & Surveillance\Home Surveillance\Home Surveillance Parts & Accessories\Other Surveillance Parts & Accessories". The seller is "tegsy200" and is located in sefton. This item can be shipped to United Kingdom.