... when use with the docking stationWith batteries & SD card, it can work without PC, When ... 7g, Dock:331.5g, Scanner+Dock:456.2gSensor type CISResolution 300DPI(default), 600DPI, 900DPIScanner speed(without dock ... A4 length:6sScan width 216mmScan length1200mmExternal memory cardMicro SD card(IF card) up to 32GB Output ... with dock, own backlight, CIS Sensor type,support 32GB SD card,USB and batteries power