... DescriptionMulti-purpose A4 Handyscan Portable ScannerType: Handy scanner, Pen scanner, USB scanner, Document scanner, Portable scannerImage Sensor: A4 Color Photoelectric SensorWhite balance ... , PHOTO Shop and other similar image processing OCR software.System environment: Windows 2000/ME/XP, ... number of documents scanned A4 size varies with (600dpi color of about 220, 600dpi is about 290, 300dpi ...