This endoscope is actually not comparable with the usual devices. The most obvious and biggest difference to other (cheaper) endoscopes is the movable camera (see video). If you actually want to look into a more complex cavity, this is just absolutely brilliant, no comparison to the normal devices.

I've been doing everything on my car myself for years, now I've gotten to the point where I can't get anywhere with my normal endoscope camera. It is incredibly helpful, especially when examining the cylinders.

I actually haven't found anything negative with the camera yet, everything is exactly as described on the product page:
- Large and really good display
- semi-rigid camera cable
- 10 meter cable length (so far always sufficient)
- reputable manufacturer
- SD card included
- Charging via USB-C
- Multilingual menu
- Very bright LED illumination
- Temperature sensor at the top
- Not dependent on cell phone or apps due to internal display
- Good camera

A big extra that is not mentioned in the description:
The device has WLAN. You can connect your smartphone super easy wirelessly (the app for the iPhone is called "AllScope"). The functions include, among other things, a live image transmission and that recordings can be viewed and saved directly without a PC on the cell phone (see screenshot).