Just installed GS8000L tested on my car. it works well with car charger comes with it. Does not work at all using any USB charger
Every functions good EXCEPT SD full does not automatically overwrite old files. Manually delete SD files before Recording again.
The 3-5-10 minutes in the menu is the length of each video segment, i use 3 minutes myself.
you will want too enable loop recording so the camera can delete the oldest files segments and continiue recording when the card is full.