... overwrite, never stop recording; 5. The video clips stored in SD card will not lose when power off; ... 6. The date/time stamp can be shown in video clips; 7. Immediately getting into "preview (ready to ... one related key; 10. Can transmit the video clips to computer directly by USB cable; 11. ... , driver, conductor etc. It can be widely used in house, company, mall, warehouse, school, office building ...