Amazon.com : 【Newest Pro Series】 iDS-7216HUHI-M2/S Hard Drive not Included, 16 Channel 4K 8MP Turbo HD Acusense DVR, 4K HDMI Output, Compatible with Hikvison 4K 8MP Coax TVI Cameras, Hik-Connect App :
Amazon.com : ANNKE 32CH H.265+ 3K Lite Security AI Digital Video Recorder with Human/Vehicle Detection, 5-in-1 CCTV DVR for Home/Business Surveillance Camera System, 24/7 Recording, P2P Technology, NO Hard Drive : Electronics
Amazon.com : 【Newest Pro Series】 iDS-7216HUHI-M2/S Hard Drive not Included, 16 Channel 4K 8MP Turbo HD Acusense DVR, 4K HDMI Output, Compatible with Hikvison 4K 8MP Coax TVI Cameras, Hik-Connect App :