... days*24 hours real time monitoring, 48 -72 hours circulatory video recording. Application: Widely used in home, mall, store, exclusive shop ... 0.3M~Infinity distance Wide angle of lens,75degree~120degree Video format output,MJPEG+ADPCM External connecter,USB,SD Card, ... full, camera will automatically cover the old documents, and recording from the first beginning. 7.6bit password protection function: ...