A key feature of the i550 is the built in GPS. It is not clear whether there will be any accompanying software although theoretically the i550 should run any of the numerous GPS / Navigation software available for S60 including Nokia Maps. 

In multimedia terms the phone has a 3.5mm audio jack, a 2.6 inch QVGA screen (262,000 colours), an FM Radio, a 3.2 megapixel camera with LED flash and autofocus and a microSD card slot for memory expansion (150 MB built in) with support for SDHC cards (currently up to 4GB).  Size wise the i550 measures in at 115 ×53 x 13.8 mm in its dimensions (making in taller than the similar specified N95, but not as thick). The battery has a capacity off 1200 mAh which should provide enough power for heavy use over a 24 hour period