KKmoon 1CH Mini Surveillance DVR Digital Video Recorder VGA Support TF Card Audio Record for Security CCTV Camera *Automatic video and audio record on the TF card when power on. *Maximum support 32G TF card, auto cover and cycle record. *Motion detection record 20fps, normal record 1fps. *Built-in lithium battery for record files storage when power off. *Can be used as USB computer camera or U disk/TF card reader.