NSysInfo is a freeware software for Symbian 9.1 based Nokia S60 3rd Edition devices that shows you lots of information about the features supported/included on your device.

System Information includes:

1)Battery Level
2) Wi-Fi/USB/MMC Hotswap
3) Processor Speed/Type
4) Resolution/Colors supported
5)IMEI number
6) Firmware software version
7) Free/Total RAM/ROM Size
8) Infrared/Blueooth Profiles
9) Mobile Internet Stack type
10) Signal strength

Download at Symbianv3.com