The maximum supported 32GB microSD card on loop recording will automatically delete the earliest videos and overwrite with new footage. The 32G SD card can record approximately 4 days of continuous video.

4GB: 11~13 hours, Around 1/2 day
8GB: 22~26 hours, Around 1 day
16GB: 44~52 hours, Around 2 days
32GB: 88~104 hours, Around 4 days