Review on 33FT AutoFocus Wireless Drain Camera With Flashlight Oiiwak 12MP 3104P Waterproof 5G Wi-Fi Endoscope Inspection Camera Bore Scope With 0.55In Lens Pipe Sewer Plumbing Snake Camera For Android IPhone by Brad Arthur

It has a very long depth of field. It’s in focus from one and a half inch to twenty feet. You can see where your going and what you want to look at. The camera end if fatter than most but the resolution is exceptional. Great for finding your way through an airplane wing and checking the condition along the length of a control cable. Small enough to get in the spark plug hole to check a valve with the included mirror. There are smaller with the same quality image but you will pay significantly more. The affordable ones have the camera in the tip. The expensive ones have a lens in the tip followed but a length of optical quality glass fibers that go to a camera. This scope works well at a decent price for the features.