I really liked them, they look very clear and fit very well even with glasses.

"I'm really impressed with these binoculars for the price. They are very much entry level price but the quality is really good. They focus really well and come in a nice little carrying case. My grandson is at the tender age of 7 an avid motocross rider so these binoculars are perfect for keeping an eye on him when he's gunning around the track. I can see him up close which gives me peace of mind that he's ok. I'm watching too the kites flying over my house and I'm fascinated by looking at them up close.
I can't give a technical review as I honestly don't understand everything, but I can say they work really well for my needs , And that is the main thing."

"These binoculars from K&F are a good entry into the world of stationary optics in the mid-price segment.

The workmanship:
They are made of high-quality rubber and plastic materials. With an ipx6 rating. This device is dust and waterproof up to a certain limit is achieved. All knobs are smooth and feel balanced. The eye diopters (back of the lenses) are also well designed and have a good range for people with uneven eye sockets. The focusing rings are also well balanced and operate smoothly so that the Blur increases significantly when focusing on a specific object. From far away up to 10 feet. It almost feels like setting a video camera to depth of field.

The glass: BAK4 prisms FMC multi-coated eyepiece and objective lens with 99% light transmission .This means the lens captures more light and can be used appropriately even in lower light conditions. The 10x42 means 10x magnification and 42cm of glass on the other side (at the end of the device). More cm means more light gathering potential in dimmer light and a clearer and more precise image.

I use it on a tripod to monitor my garden during the day. They also work great at night. Simply use a long throw flashlight and you can see the glowing eyes from a safe distance. Perfect for short range hunting and even bow and arrow or pellet shooting. Simply point them at your target and you'll be able to see your groupings without having to leave your seated position.

I returned it because I couldn't adjust it to fit my phone camera.

I was a bit skeptical at first because I still have a small LEICA glass that costs over 300 euros. But this part really surprised me. It was a birthday present for our 5 year old grandson, who now always observes the surrounding area from his observation post in the tree house.
The settings work perfectly - not too hard and not too easy. Of course he had a hard time with the diopter adjustment. I set it to 'middle', which I'm sure he doesn't need yet.
Conclusion: Compared to the expensive LEICA glass, this one doesn't do that badly. I would buy it again.