This document provides specifications for an MD041-K 4 channel H.264 CIF DVR. It supports recording and simultaneous playback of 4 video channels in CIF resolution at 1-25 frames per second. It has features like H.264 compression, support for 1 SATA HDD and 2 USB ports, backup to USB/HDD/CD/DVD, and mobile monitoring on various platforms. The DVR has a high performance embedded processor, embedded Linux OS, and supports functions like recording, playback, backup, remote access and mobile monitoring simultaneously.