Swann SWDVR-165580H-EU Product colour: Black Maximum video resolution: 3840 x 2160 pixels Channels quantity: 16 channels Audio input: 4 RCA Audio output: 1 RCA HDD interface: Serial ATA Maximum HDD capacity: 6000 GB HDD capacity: 2000 GB Reliable Wired ConnectionProtect your loved ones & property with this wired surveillance system. Just add compatible camerasSee & Hear Everything in Ultra HDSee faces, license plates, packages with state-of-the-art 4K Ultra HD, thats 4x clearer than 1080p with powerful digital zoomensuring you wont miss a thingExpand when NeededAdd compatible cameras (see below) as you needSet & ForgetEnjoy local recording for up to 180 days+ onto the massive 2TB hard drive with no fees ever. Save still images directly to your Dropbox accountSecurity Made SmarterCut the cost of crime & know whats happening with this 4K Ultra HD security recorder. Just add camerasUltra-Impressive 4KVideo in pro-quality Ultra HD to see everything thats happening live or in playbac