Channels quantity: 16 channels USB connectivity Ethernet LAN HDD interface: Serial ATA 4 TB Black Security Made SmarterCut the cost of crime & know whats happening with this Full HD 1080p security system to suit homes, offices, small businesses & retail storesSee More in Full HD 1080pFull HD 1080p resolution lets you discern important details which are essential for evidence, such as faces & license platesSet & ForgetEnjoy free local recording for up to a whole year+ onto a massive 2TB hard drive & save footage directly to your personal Dropbox accountExpand when NeededAdd up to 16 compatible cameras for full 16 channel monitoringOne App, Complete SecurityThis product is compatible with the Swann Security app ecosystem. You can connect otherworks with Swann Securityproducts to create your own safe home.Speak to SeeEnjoy hands-free security using voice commands. Stream video from your camera via the Google Assistant & Chromecast, Google Home Hub, or via Alexa devices with a screen,