DS640 BROTHER Portable Document Scanner About this product Make scanning, saving and sharing your documents effortless. The small, compact design, makes the DSmobile DS-640 ideal where space is limited. Whether on a reception desk or when you are out of the office, reducing the amount of paperwork and ensuring document security is always key. A great choice for reception areas, small offices and working on the go. Specifications Usage type: Mobile Max. paper size: A4 Connectivity: USB 3.0 Lithium Battery: N/A A4 scan speed: 15 ppm 2-sided scan: No Scan Resolution: 600 x 600 dpi optical, 1,200 x 1,200 dpi interpolated Scan to: Email, OCR, file and image Duty cycle: (max. monthly 2,000 sheets)