User Agent String.Com 

User Agent String explained :

Opera 6.04
Opera	Name : Opera
6.04	Opera version
Windows NT 4.0	Operating System: Windows NT
U	Security values: N for no security U for strong security I for weak security
de	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) de = German
Last visit:	2014.02.12 03:17
All Opera user agent strings