I got one of these too, they work fairly well. Problem is that it cannot focus close up (like within 2 inches). So if you are trying to see in a constricted space it will be fuzzy.

Also it is not stiff, so you end up pushing on a rope trying to get it into a tight space.

Also camera-fi only works with the later Android versions. I had an old Android tablet with ice cream sandwich and it was too old to support the USB camera port function.

Luckily it came with a full size USB adapter so I used my son's old (ca 2011 HP cheap piece of junk) laptop and it worked great with the Windows 10 built in camera app.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech