Review on Oxbird50X-2000X HD USB Microscope for Adults - Digital Microscope for Android Phones (non-iOS iPhone), Mac & Windows 7/8/10 Compatible by James Richardson

Works great - I use it as a magnifying glass to see the trichomes. However, the microscope has two "Zoom" and "Photo" buttons that literally do nothing. The zoom is changed by the physical mechanism you turn. I don't know what the electronic button can do with this device. The photo button should theoretically work, but I can only take pictures by somehow clicking on the phone screen while holding the microscope and whatever I'm looking at. To be honest I don't think these two physical buttons are connected to anything internally, it seems like they just attached buttons and printed a few words on a piece of plastic and that was it. The app to use it also sucks and is obviously just another mass-produced Chinese junk.