This is my second Bysameyee digital microscope- my first was the earlier model with a native camera resolution of 640x480 but somehow managed to pull off a great picture with its optics - this second unit boasts a native 4k resolution with the same 1000x zoom optic. As an added bonus, the 4k model also has a built-in Wi-Fi capability and can run wirelessly with an internal Lithium ion rechargeable battery. Because of this I'm now able to use my iPhone on the fly as a display which ended up being really useful and convenient. The included manual provides a QR code for both iOS and android that will take you to a bare-bones microscope viewer app ambiguously called "˜Wi-Fi-check' - it gets the job done with minimal fuss by allowing you to point your phone's Wi-Fi to the microscope which shows up like a private Wi-Fi hotspot device or access point. From there you can select your camera resolution up to 4k and go to work - Easy! Worked great on my kids geode collection. For my garage lab I've got an older Dell laptop running Linux and was able to install the "˜Camorama' video app from the AUR repos without issue. It found the microscope picked up on the supported resolutions up to 4k without any extra configuration and was ready to go pretty quick. I did try this 4k model on my humble Raspberry Pi 2 but the higher resolution was a bit too much for it, so I'll be keeping the earlier model microscope for that configuration. I also tried out the 4k model on my elderly MacBook Pro 2010 but had to scale the resolution down to 2k for the image to display properly- this wasn't too surprising given the age of the laptop - 2k was actually quite usable. Bottom line the higher resolution camera on this microscope will require somewhat modern computer hardware to display at it's fullest capability. Usability-wise this 4k unit was fairly straightforward and easy use. The only quirk that took some experimentation to figure out was that because the power button doubles as the snapshot button, to turn the microscope off, you have to press the "˜power' and "˜zoom +' buttons simultaneously. Not really an issue once you know that bit. Oh and don't forget to take the lens cap off prior to use! Given this 4k microscope goes for about as much as the earlier model and is packed with extra features, it's an absolute bargain and a must-have tool for any hobbyist or repair tech.

This is great for doing backyard analysis for insects, diseases, and just looking at high resolution of anything in the yard. Showed kids it, and they found it pretty amazing!

I purchased this microscope to look at knife blades while learning to sharpen them. I am still learning, but it seems to give me what I am looking for. One trick is to get the lighting right. The knife blades are shiny, and this can cause problems. I also set up my own stand because it better suited what I was doing.

Another thing it helped with was seeing a burned-out circuit. My son plugged in a USB device to his laptop, and smoke came out of the USB port. We opened the laptop to see if we could find out what was wrong. I could not see the burned chip with my naked eye, but the microscope saw it very well. Luckily it was on a separate PCB and not the main motherboard.

The pictures are of:
Band aid - blue weave
Hard glasses case - black/gray weave
Foam brush - the creepy looking one
Knife I sharpened - the blackish portion was from a sharpie so I could where I was sharpening it
Phone screen
Burned up circuit
PCB with the burned-up circuit
The factory edge from a new knife
My camera setup.
An unseen chip on another knife.

Pros:
Wi-Fi connection to phone.
Internal light if needed.
Great price for what you get.
Rechargeable battery.
Picture quality is good if you get the focus and lighting right.

Cons:
The stand is inadequate for most things.
Would like to be able to zoom and focus without touching the microscope

The 5-star rating is because of the value. I could spend hundreds or thousands for a better microscope, but this is all I need.

The first thing to know is that a good heavy-duty microscope with good optics for industrial applications costs several hundred dollars. If that is what you need, you are fishing in the wrong pond.

However, if all you need is a light-duty microscope with mediocre optics for hobbies or occasional work use, this one is probably the best in this category and price range.

The next thing to consider is magnification. Ignore the claimed magnification numbers on all microscopes in this price range. They are lies. There is a specific formula for calculating magnification, and these scopes aren't using it. Even if those numbers were true, they are the wrong thing to base your decision on. Higher magnification is not necessarily better. A very-high magnification might be too much for your purposes.

What matters in magnification is (1) does it magnify enough for your purposes, and (2) is the resulting image clear and detailed? I can't answer #1 for you, but I can tell you that all of the other microscopes in this price range that I have seen fail #2.

Those other microscopes have a terrible 0.3 megapixel image sensor and give you a puny 640x480 pixel image. You can "see" the object that you have the microscope pointed at (because it occupies the whole frame), but it's just a blur. You don't have enough pixels to make out any of the detail.

This microscope has an 8 megapixel image sensor and gives you a 3840x2160 pixel image. That gives you lots of pixels to resolve lots of detail.

What you need to determine for yourself is whether this microscope magnifies enough for whatever it is you are planning to use it for. The attached image is of a US dime placed directly under the microscope. That is the magnification you get.

The media could not be loaded. First, while just using the UVC drivers that windows provides, the digital zoom buttons do nothing in the windows Camera app. No big deal, I just move the microscope closer.

Second, the stand is junk. It barely stands up. I bought a cheap microphone clamp and attached the microscope to a desk mounted boom arm.

Third, this thing is super laggy on 4k, and somewhat laggy on 1080p. Both were too laggy for me to use it as a PCB soldering microscope. However, on 720p there is hardly any delay, and I'm able to solder with it just fine!

PROS:
- Great detail for soldering
- 720 has very low latency
- Twitch Studio compatible
- GREAT for the price

CONS:
- Very Delayed on 4K
- Delayed on 1080P
- Stand is pretty much useless
- Zoom buttons do nothing on UVC drivers