Dual lens design, 10 Mega-pixel main lens for documents or objects scanning, and 2 megapixel top lens for portrait shooting. Adopts non-contact scanning technique which increasing types of documents or objects that can be scanned. With adjustable height(30-39cm ), and max. scanning size is A3(extended) or A4(non-extended). High speed scanning, just k the mouse, then you can get the picture in about 1 second, very efficient. Supports OCR function(can recognize English & Chinese which can convert image format into editable word format