User Agent String.Com 

User Agent String explained :

Opera 9.70
Opera	Name : Opera
9.70	Browser version
Linux i686	Operating System: Linux running on a Intel Pentium Pro CPU
U	Security values: N for no security U for strong security I for weak security
en-us	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en-us = English - United States
Presto	Layout engine for Opera
2.2.0	Version 2.2.0
First visit:	2009.04.01 02:33
Last visit:	2010.02.15 08:12
All Opera user agent strings