This Portable Motion Detection Audio Video SD Recorder DVR system DVRSD10 supplied by VideoSecu could record audio and video on SD card (not included) without computer. It could be set to record by motion, which means that it saves a lot of memory/space! With simple design, this SD recorder is an ideal video surveillance solution for residential and commercial security applications. Affordable digital video recording is at your fingertips with the HD Mini-DVR. The solid state mobile digital video recorder is ideal for low cost mobile applications, and features the latest MPEG-4 video compression technology for longer record times. DVD quality recorded video records onto a standard SD card at 640 x 480 resolution and up to 30 frames per second. It could also offload video quickly and easily from the single channel security DVR in AVI format for fast review of recorded video evidence. It supports SD memory card (up to 16 GB), also support SDHC memory card (memory card not included). You can set a variety of recording mode: motion detection recording, schedule recording, manually recording. This security DVR system comes with 1 power supply, 4 connectors and 2 RCA cables, which provides more convenience. Absolutely the best choice for you!