Yes goes

In my opinion, it is a 1920 resolution when I look at the quality. Unfortunately, I can't say for sure, otherwise I'd have to unscrew it. I can only say, brilliant quality

No - the system works on a 2.4Ghz basis completely independently of any WLAN etc. The only thing to note is that the range is limited depending on the circumstances (house walls for indoor use), etc.

There is an antenna on the camera as well as on the screen, but without an extension cable.

According to consultation, a 32 GB card should record for a good 40 to 45 hours before it starts overwriting. This is a theoretical value. In practice, a little more memory can always be used up, especially when smaller files are recorded.

No, I have the system and could not find such a function. Greetings