7" LCD Screen 1200X Digital Coin Microscope 1080P with 8 Adjustable LEDs

SKU: GW45.0104

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Sorry, it can't. It's an LCD digital microscope which can't see the bacteria, dust, or germs. 
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No, it has a screen and you can view images on it. Only when you want to view it on the PC screen you will need a computer. 
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No, when you connect to the computer, the screen of the microscope will not show the image.