4 Channel USB DVR Record live video to your computer's hard drive Sound and motion detection Remote playback Date/time search capabilities Resolution: NTSC-640x480, 320x240, PAL-704x576, 352x288 4-Channel USB DVR with Quad Display Supports Network, recording to PC USB 2.0 Interface, transmission up to 480Mpit/s Sound and Motion Detection Input type: RCA Video Input: 4 channel Audio Input: 2 channel Display Rate: NTSC- 30fps, PAL-25fps Compression Format: MPEG4 Resolution: NTSC-640x480, 320x240, PAL-704x576, 352x288 Record Mode: Motion, Scheduled, Manual Network: TCP/IP Remote Software: Internet Explorer browser