... 32GB.Contact image sensor:217x1200mm(max).Use 3 x AAA Alkaline batters.High Cost PerformanceIntegrated functScanning, Printing E-faxing,Emaile-book ... (up to 32GB)Product Size(LxHxW)L253×H30×W25mmPower 3xAAA Alkaline batteries Support system Windows XP SP2, Windows vista, Windows7, MAC OC ...