User Agent String.Com 

User Agent String explained :

Opera 9.61
Opera	Name : Opera
9.61	Opera version
Windows NT 6.0	Operating System: Windows Vista
U	Security values: N for no security U for strong security I for weak security
pt-BR	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) pt-BR = Portuguese - Brazil
Presto	Layout engine for Opera
2.1.1	Presto version
Last visit:	2022.08.27 11:06
All Opera user agent strings