Sunnice&reg; 4-channal 2.4G Wireless Camera Receiver USB DVR Video Audio for PC CCTV CAM Wireless USB DVR 4-channel, 2.4GHz wireless video/audio Capture images 30 frames per second, Record file format AVI and play with Windows Media Player USB 2.0 interface, transmission rate up to 480Mpit/s,48times Fluency video display, 720*576 image up to 30 frames/s Sharp and nature image with true color, Advanced digital video control function