GW Security 32CH HD 1080p 4-In-1 DVR Security System, QR-Code Connection, 18 Day Night 1920TVL High Resolution Weatherproof Dome Cameras CCTV Surveillance System 4TB HDD High Definition 32 Channel HD-TVI 1080P DVR with (18) 1920TVL HD 1080p 2.8mm-12mm Varifocal Lens Cameras QR Code Scan Technology - Easy Remote Access Anywhere Anytime. Free Apps for Live View and Playback on Smartphone / PC Devices Connect up to 32 HD-TVI Camera. Plug-and-Play. Easy to configure, access and control. DVR Support 8 SATA HDDs, up to 4TB each, total 32TB Provides Clear Image High Quality with HD DVR and 1920TVL Weatherproof IR Cameras Pre-installed 4TB Hard Drive and 500FT RG59 Siamese Power/Video Combo Cable included. 1 Year Warranty and Free Life Time Tech Support From U.S.A.