The Brother DS-820W mobile scanner is perfect for the mobile professional who needs a powerful scanner that will slide right into a briefcase or business bag. It's ideal for capturing business documents, as well as receipts, business cards, laminated identification cards, invoices, photographs, and more. It can operate completely wirelessly thanks to the Wi-Fi interface and included rechargeable Lithium-Ion battery, enabling Wi-Fi transfer of scanned documents to computers and mobile devices‡;. It scans at up to 1200x1200 dpi resolution (interpolated) and 600x600 dpi (optical), with fast color and black scan speeds of up to 8ppm‡;. Its small size, flexible USB or battery power, and valuable suite of scanning software make it a great fit for home offices and desks with limited space, too!