If you're looking for a good all round inspection camera this is it....
I purchased this with specific task in mind:
1. Plumbing inspection and leak detection especially when the drain is clogged...
2. Automotive and light duty Truck repair - used it to do visual inspection inside cylinders on diesel engine valve, cylinder walls and piston.. I used it to locate hidden bolts while changing out cam driven distributor on 1994 Toyota Camry..
3. Home HVAC inspection on evaporator, condenser, and supply side air registers.

I am retired and no I am not a professional.. just like fixing things and the K&F Concept Inspection Camera is soooo much better than using an inspection mirror and a flash light....plus you don't have to climb over or under things to do inspections....My wife uses it to find things that she has dropped behind the washing machine, dryer or the stove...

I bought this camera to find a blockage in a 50mm sewage pipe. That worked well too. You should first practice handling the camera in a clean pipe so that you can better assess what you are seeing when you actually use it. To protect the camera, I stuck a film (from my cell phone) over it. The side camera is very helpful for orientation. Or, in my case, the only camera I walked around with, because the front camera was smeared with grease from the fat deposits when it was inserted into the tube. Since the image can be received via WLAN, you can use different devices to display it. A focal length adjustment would be great , but you can't expect all the features for the price.

Saw where pipe was leaking in wall and only had to make small hole to fix money saved was price of camera with only one use.

sent it down the pipe and found the problem.

Quality best inspection camera I ever own.

I have used this endoscope camera both in the engine compartment of my vehicle, which is difficult to access, and to inspect our sewage pipe and I find the image quality satisfactory in view of the quite low price.
If the clog in the drain pipe can be located (and cleared) without hiring a costly plumber, it's already a worthwhile investment.
Only the recording and storage function did not work and it turned out that the memory card was defective.
The seller responded obligingly and generously replaced the purchase price with a higher-quality memory card.
The durability of the camera will have to be seen, but will hardly be used due to a lack of demand.

In any case, the neighbors were already delighted that they could fall back on my "endoscope camera service" in an emergency. :-)

I have used this endoscopic camera both in the hard-to-reach engine compartment of my vehicle and to inspect our sewage pipe and find the image quality satisfactory considering the fairly reasonable price.
If the blockage in the sewage pipe can be located (and removed) without having to hire an expensive plumber, the purchase has already been worthwhile.
Only the recording and memory function did not work and it turned out that the memory card was defective.
The seller was accommodating and generously refunded me the purchase price for a higher quality memory card.
The durability of the camera remains to be seen, but it is hardly used due to lack of demand.

In any case, the neighbors are already happy to be able to call on my "endoscopic camera service" in case of emergency)

Article was delivered very quickly and neatly, article then times taken in inspection. Was actually already mounted everything, memory card was inserted, endoscope already mounted and accessories such as Imbussschllüssel small spare screw in a small plastic bag available.
Switched on, battery and was almost to good 100 percent loaded----- thus immediately ready for use, endoscope actually very rigid and the function of the LEDs as it advertised or advertised. The side LEDs can only be activated as well as the camera switching to the left / right view, by pressing the small push button on the endoscope (USB port on the camera). Screen provided with protective film and everything in an associated case well and safely to store or protect available.
Image quality for close-ups acceptable to good, editing options but to be qualitatively better .... there you can about an image editing program still rausholt so some (but is not a point of criticism for me, just a note) ....for the quick snapshot, inspection / examination or short video sequences but quite sufficient.
USB - connection to the camera with a small screw fixed, has its reason because the cable is a little rigid, it protects the connection in the camera from accidental loosening or breakage. The small support foot, which can be attached to the camera, is well-intentioned but somehow not mature, unless you no longer move the endoscope cable because otherwise the camera actually does what it wants.....slides back and forth or falls down if necessary.
Settings of the camera such as date, time, language, etc. quickly and intuitively adjustable. Manual available .....
You should take the time to check all functions and familiarize yourself with the camera. If questions arise, the customer service provides very fast and friendly support in a short time .....Klasse
Should the quality and customer service remain so, which I hope, the camera is for me a clear buy recommendation.