8CH 1080N/720P 4 - IN - 1 HD - TVI DVR - - - This 8channel 4 - in - 1 DVR which supports Analog , HD - TVI , CVI , AHD Camera . it provides you the flexibility to add 8pcs 720P or 1080P cameras . Customizable advanced motion detection - - - Be notified when there are unexpected movements . Smart notifications with image will be pushed to your smartphone via iPhone/Android App . And you won't miss any moment with remote and local playback View from anywhere anytime - - - The ZOSI VIEW free app lets you see all of your cameras in one place . Check in on your home or business wherever you have an internet connection . Free ZOSI VIEW App for Live View & Playback on Smart Devices with WiFi or 2G/3G/4G Anywhere Anytime . Smart Phone Support : iPhone , Android , Ipad . No Include Cameras and Hard Drive - - - This system does not come with cameras and hard drive . Assembling a 3 . 5 inch SATA 500GB to 2TB hard drive is necessary . DVR can be set to automatically overwrite the oldest internally stored footage or you can transfer those video files by USB to a memory stick or external hard drive . Noted & Warranty - - - Two year quality Warranty , Life time Tech Support ! If your product stops working in the first year we will replace it, Manufacturer: ANSJER ELECTRONICS CO.,LTD