British personal digital assistant maker Psion has moved into Asia in an expansion that coincides with the release of its Series 3 palmtop computer. The Psion 3c and Psion Siena are aimed at the business and consumer markets, offering wireless connection to printers and special adaptations of software for basic productivity and organiser functions. The Psion 3c offers Internet connectivity, compatibility with GSM cellular phones via a PCMCIA data card and 60 hours of battery life, using conventional AA-size batteries. The Siena works with AAA batteries and offers 40 hours of continuous use. It has an MS Word-compatible word processor and an agenda that extends till the year 2049. Earlier Psion palmtop models were aimed at industrial usage, for tracking stock in warehouses, but new models indicate an increased focus on the home and office market. Psion, which opened an office in Singapore last week, said figures from Forrester Research estimated it held the largest chunk of the market for palmtop computers, at 33 per cent.