Good catch! I think that’s a reasonable expectation, and this seems like something Wyze should correct. In the past, I’ve submitted correction requests via e-mail to Support (I’ve had to open a ticket to do this), and sometimes they update things like that, but it can take time.
I don’t know if this helps or not, but I went back to the earliest place I could find in the timeline on a Cam v4 that’s doing continuous recording to a 256 GB microSD card, and then because I’m lazy I asked WolframAlpha to calculate the time difference between then and now, and it said that it’s 18 days, 6 hours, and 45 minutes.
I did not look through the entire timeline nor pull the card and check the file list/hierarchy to ensure that every minute of that has actually been recorded, and I will note that we had a brief (momentary) power outage here during a recent thunderstorm. I’m also a little puzzled by this figure, because when I did a similar check with a Cam OG a while back, I was seeing 17 days of continuous recording. Now I’m a little curious about the compression issues that I read about sometimes, but for my uses I don’t know that it’s worth the trouble to do a lot of digging.