A:Answer Hello,
The 32GB Micro SD card holds about 2 hours of recorded footage.
Regarding the recording lengths, the camera will record continuously in small segments (1,2, or 3 minutes). It will record these segments consecutively until the SD card is full. Then the oldest piece of footage will be deleted and the newest will be saved in it's place. This will continue looping and is called Continuous Overwriting. The Dash Cam does this automatically to allow for more footage to be recorded and the old, unnecessary footage to be deleted without manual intervention.
However Protected Files are not overwritten in the same way as normal files. If you do not format regularly, these files can build up and reduce the capacity of storage available for normal footage. It is essential to format every two weeks to delete any protected files and clear the card ready for continued usage.