Buy from Amazon : br HAMSWAN K802 USB Motion Detection Night Vision Home Security DVR Dome Camera TF Card Slotbr br Microcomputer processor ARM9 32-bit microprocessor core br Encoding MPEG-4 br Video format VAG 640 480 CIF 352 288 br HD camera 300000-pixel high-resolution 14 CMOS image sensor br Support TF card 1-32GB