Q-See QT874-2 4-Channel 4MP H.265 HD IP NVR with 2 TB Hard Drive, Standalone Surveillance System (Black 4 Channel 4MP/1080p HD IP NVR with 2TB HDD Recording Resolution Per-Channel: 4MP (30 FPS per Channel), 3MP (30 FPS per Channel), 1080p (30 FPS per Channel), 720p (30 FPS Per Channel) Supports Q-See QT Series Products, and QTN HD IP Cameras. H.265 Video Coding - Maximize storage space and reduce file sizes by nearly 50% without sacrificing on video quality. QT View app allows you to easily connect to your DVR for instant live viewing on a smartphone or tablet. (Windows/Mac), Apple/Android Mobile Devices