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...

The endoscope camera from K&F Concept really surprised me in a positive way. As a hobbyist, I was looking for a practical tool to examine hard-to-reach areas more closely. And this endoscope has my compatibility with my iPhone was an important aspect for me and I am glad that this endoscope is designed specifically for iOS devices. Setup was incredibly easy - all I had to do was download the app and connect the endoscope to my iPhone. Within a few minutes I was ready to use, almost plug and play. The 5 meter long semi-rigid cable proved to be extremely practical. It's long enough to get into tight and twisty areas, and the semi-rigid material allows the cable to be bent into different shapes to achieve your desired viewing angle. I was impressed by the flexibility and stability of the cable. The image quality is also very good. The camera has a diameter of just 7.9 mm, which makes it possible to navigate even in the tightest of spaces. The 8 LED lights provide sufficient illumination so that I was able to capture clear and easily visible images and videos. The IP68 waterproof rating was an added bonus and even allowed me to perform inspections in humid environments. The included app offers a variety of features including adjusting brightness and contrast, taking photos and videos, and live streaming the image to my iPhone. The operation is intuitive and user-friendly.

The app starts automatically when the camera is connected. (Good). It is difficult to orient the camera so that the camera view is right side up. (annoying) A 5 meter long flexible cable is too long in my opinion. I would like a 1-1.5 m long cable. (annoying)

The product come with dual cameras and front and one optional rear camera. It also provide a usb port so you can still charge your phone with it. It has very long cable so you can easily hide them.

The camera is really good
I am very satisfied and grateful for your products and would like to recommend!
Why is this my opinion? Most cameras need a power supply via cable. Some over the house net, some to a station.
Those that work on batteries are usually not incl. a solar charger. And here it is easier than the instructions suggest.
The video is shot in wide angle. The range is really gigantic. The quality is amazingly good! The sound quality is really good. The shots at night, with infrared light, are in SW and of good quality. The illumination is relatively wide!
The solar panel does not really charge much. It should be mounted so that the
sunlight reaches the panel as long as possible and with full power. The cable between the camera and the panel is long, so there is a lot of leeway.
a lot of leeway.
Clear recommendation!!!!!

This is a great tool for inspection work. Simply plug in the cable and the app will load automatically. Excellent video quality at an affordable price. Very happy with the purchase

The front facing camera is easy to set up and comes with a long power cable which means you can route it around the dashboard and front windscreen as a temporary measure

the sharpness and the brightness of the camera is overwhelming, the cable length is too long for my purposes, I checked the valves in the combustion chamber of my car