Specification Image SensorA4 Color Contact Image Sensor Number of sensor 5136dots(1st~5104 dots available) ResolutionLow resolution:300*300 dpi(default) High resolution:600*600 dpi Maximum scanning speed for A4 size documentColor High resolution: 13 Seconds Mono High resolution: 6.0 Seconds Color Low resolution: 3.0 Seconds Mono Low resolution: 2.0 Seconds Capacity (Based on 1GB microSD card.Scan A4 size file,the quantity of scans varies depending on the content complexity 600dpi color: 220 Photos(Min.) 600dpi mono: 290 Photos(Min.) 300dpi color: 780 Photps(Min.) 300dpi mono: 1280 Photos(Min.) Scan width 8.27" Scan length 300DPI:50"(Max),600DPI:25"(Max) File formatJPEG LCDScanning status display Auto Power Off3 Minutes USB portUSB 2.0 high speed External memory MicroSD Card Standard Battery 2*AA alkaline batteries AccessoriesUSB Cable1pcs CD Driver1pcs Carrying bag1pcs User manuel1pcs