... secondMono Low resolution:2.0 seconds Capacity (Based on 1GB micro SD card.Scan A4 size file,the quantity of scans varies ... Power Off:3MinutesUSB Port: USB 2.0 high speedExternal memory:Micro SD Card ( inside the machine, no outside , new style )Stardard Battery ... .Automatic white balanceFile format: JPGImage size:A4Supports USB port and micro SD card up to 32GB.Use 2X AAA alkaline batteries.Item ...