Endoscope purchase, what should one pay attention to?

I actually don't want to know why I don't need the device at all, but what I should pay attention to when buying ...

If you say what for, then you can get an answer. It has nothing to do with the forum. When you go to the supermarket to the meat counter, you also don't just say "a kilo of meat". If you do, the seller asks you "what for?" – quick frying, feeding the dog, etc.

Because it is not so important, we did not examine a pipe opening in the garden, but now I would like to know if I can simply fill it up, or if it is still good for something.

I would just go to the tool rental and rent a professional device for ten bucks.

you really rob someone of all illusions

Thank you for your comment.

Addendum:
... that was actually the answer for K1300S.
At the same time, you had replied, Nordanney.
I will now gladly accept it for you as well, it fits there too

What is said little about in the descriptions is the flexibility or controllability of the cable.

I only know cheap endoscopes with a bendable gooseneck. You bend it by hand however you want and insert the endoscope into the hole. Controllability inside the hole is zero. If you bump into something, the gooseneck just bends somewhere and you can't proceed. Watch the promotional videos directly on Amazon or YouTube. They give a first impression.

What functions should be electronically controllable? (Brightness? Lens focus?)

Maximum brightness would be important. Manual focusing is also nice, of course. The discussion whether you need it... no. Whether you want it as a toy... actually yes. As suggested, I would rent the thing; otherwise, you use such a Chinese gimmick once now, and at the next use in five years, there is water in the lens system or something else broken, brittle, etc.

[/QUOTE] Whether you want to have it as a toy.... actually yes
As suggested, I would rent the thing, [/QUOTE]
(didn't work out as planned with the quoting)

For the "forgotten drain pipe," which I would like to investigate, I will not rent such a device, it is not important enough for that.
Buy a toy that is too dark and not well controllable?
Doesn't sound very appealing...
well, we'll see ...

Can you also examine the body openings with such an endoscope??

can you also examine body openings with such an endoscope??

How tasteless You bastard...