With iScan Air S400W from Mustek you can quickly scan your documents (in PDF format) and photos (in JPEG format) to your mobile devices with WiFi.Compatible with iOS, Android and Windows devices, the iScan Air S400W will scan an A4 page in 3 to 12 seconds for a colour resolution between 300 and 600 dpi.Its rechargeable battery lets you scan up to 400 A4 sheets, and its user interface is simple, interactive, and easy to use.