This endoscope is actually not comparable to the usual devices. The most obvious and biggest difference to other (cheaper) endoscopes is the moveable camera (see video). If you actually want to look into a more complex cavity, that's just absolutely brilliant, no comparison to normal devices. I've been doing everything on my car myself for years, now I've come to the point that I can't get any further with my normal endoscope camera. It's incredibly helpful, especially when examining the cylinders. I haven't really noticed anything negative about the camera, everything is exactly as described on the product page: - Large and really good display - Semi-rigid camera cable - 1 meter cable length (so far has always been sufficient) - Reputable manufacturer - SD card included - Charging via USB-C - multilingual menu - very bright LED lighting - temperature sensor at the top - not dependent on mobile phones or apps thanks to the internal display - good camera A big extra that is not mentioned in the description: the device has WLAN. It is super easy to connect your smartphone 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 on the cell phone without a PC (see screenshot).