It build in digital crosshairs and color control, add line in the pictures, freeze, Mirror, Rotate, Negative, Compare function. Supply USB, HD video, VGA, output ports. Pls leave a note or send a message if any question.Return We offer 30 days return. We'll do best to solve any problem. This item is in the category "Business, Office & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Microscopes". The seller is "eletech_2021666" and is located in this country: CN. This item can be shipped worldwide.