"Its expensive but it is very good quality. The optic camera is sharp,clear and the screen is very large and can be removed from handset to be viewed remotely which is extremely useful. Once you purchase a micro sd card then you have the ability to record in video or take snap shots. My main issue is when you attach the optic cable, you have to view the screen and twist the cable to initially find the right way up. It is annoying and awkward, then after a few twists and bends of the cable- you soon lose that right way up that you sort after. That said, I have no idea if its any different with other inspection cameras. The battery lasts a long time and can be used with other dewalt tools in the 10.8v range. I cant comment on reliability yet as its new and relatively unused."