I wasn't sure about the internal size, but it fits perfectly with the camera and lenses I have. In the first photo, I used a Nikon D7200 with a 70-300mm lens, and there's still room left. In the second photo, I'm using the camera with an 18-200mm lens and as a spare 70-300mm lens

The internal divider is a great addition to keep a couple of lenses and the camera separate. The front pocket with color tabs makes it easy to track batteries or memory cards on long shoots.

As far as generic dashcams go, this checks all the right boxes as long as you're not expecting stellar video quality. With 1080p front, 720p rear/ internal camera, coupled with a cheaper sensor, the video footage is acceptable. In good lighting conditions the front camera can pick up license plates to close cars easily enough, as can the rear camera for cars directly behind you. Night footage isn't the best, as to be expected, but I believe it would certainly help in a situation should an "incident" occur where you needed to use the footage. The internal camera, being the lowest resolution, works fine and is lighted in the dark.

The menu system / buttons aren't the most intuitive, with a lot fiddling needed if you don't have the manual in front of you. However, once you've got the settings as you'd like them, you don't have to play around with them. I like that it includes a 64GB card so you can get going right away. It will quickly fill, but as it's loop recording that isn't really an issue.

Overall, it's an average quality dashcam when you factor in the cost.

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...

This inspection camera was ordered to inspect a sealing membrane in a house with timber frame construction as a homeowner accompanying a renovation. The image looks sharp on the display and the camera has a sufficient refresh rate for orientation. Noise is tolerable in low light, but almost imperceptible in full light. The side camera is only sharp in the close-up range, but it is still very helpful for the rough exploration of cavities, because you can dive into a borehole and get an all-round view without having to turn the camera head around the corner. The line can be easily modeled and remains easily routed over a distance of approx. 1 meter. This has proven useful in getting the camera free again, if you want to look behind an edge at some distance with a bent end. The long line is also helpful to form a kind of crank outside the hole in order to be able to guide the camera better.
I can't see any reduction in image quality in the photos after I've scaled them down to 50% as a test. I therefore suspect that the usable resolution is well below the specified 1080P. I haven't tried the accessories like the magnet, but the protective ring for the accessory thread sometimes gets in the way when pulling the camera back. A clear purchase recommendation for occasional use.

Quality best inspection camera I ever own.

This inspection camera was ordered to inspect a sealing sheet in a house with timber frame construction as a homeowner accompanying a renovation. The image looks sharp on the display and the camera has a sufficient refresh rate for orientation. Noise is tolerable in low light, but almost imperceptible in full light. The side camera is only sharp in the close-up range, but it is still very helpful for roughly exploring cavities, because you can dive into a borehole and get an all-round view without having to turn the camera head around the corner. The line can be easily modeled and remains easily routed over a distance of approx. 1 meter. This has proved beneficial in getting the camera free again, if you want to look behind an edge at some distance with a bent end. The long line is also helpful to form a kind of crank outside the hole in order to be able to guide the camera better.
I can't see any reduction in image quality in the photos after I've scaled them down to 50% as a test. I therefore suspect that the usable resolution is well below the specified 1080P. I haven't tried the accessories like the magnet, but the protective ring for the accessory thread sometimes gets in the way when pulling the camera back. A clear purchase recommendation for occasional use.

Very good picture from the camera. You can operate the camera via the app. The picture can be set in both SD and HD. A micro SD card for internal recordings can be expanded to 128 GB in the internal card slot. The SD card can be deleted and played from the app. The night picture is in black and white, but very easy to recognize. The internal motion detector does its job quite well, but apparently only human movements are recorded. But maybe you can still adjust it somewhere so that every other movement is also recorded if you wish.