The Psion Workabout Pro is one of the most flexible hand-held devices on the market.  It's available with both numeric and alphanumeric keyboards, can work with WiFi, GSM/GPRS/EDGE, or UMTS/HSDPA voice and data. There are an enormous variety of scanner, imager, and RFID options. You can even select between Microsoft Embedded CE 5.0, Windows Mobile 6 Classic, and Windows Mobile 6 Professional for your operating system.

It's a hardy device designed for the field. It's rated to 26 drops from 5 feet to polished concrete and designed to repel dust and water.

The full VGA resolution display allows your users to see finer details in maps or schematics, and provides easier readability of text in most lighting conditions, including direct sunlight.