I had the same a 64GB SanDisk granted to first to be able to plan filming going on without problems.
So far so good. Everything went well.
But if you then pulls the videos of the Cam
If, after 5 seconds of recording a fixed background noise.
Only about 4 seconds "Beetle Bug's Life" on the microphone, followed by 2 beeps.
The accuses his way through entire video and annoying.
I had only the X7 in suspicion.
The friendly support then told me (within 2 hours)
it has often been problems with SanDisk.
Thus, I tested another NoName map and lo and behold,
no bugs and no more beeping in the videos.
My conclusion: Nice little chat with lots of accessories.
Quality is very good.
Battery life not enough to fill the 64GB,
but is significantly higher than one hour.
Display is sufficient to gain a quick overview,
but is otherwise not really needed.
The remote miss I do not really,
because the basics can be done via the app.
Share videos via app or publish I do not miss,
because you do not want to make anyway so instantly check the raw video.
Thus, it does what it should and I am satisfied.
