User Agent String.Com 

User Agent String explained :

Opera 9.64
Opera	Name : Opera
9.64	Opera version
Windows NT 5.1	Operating System: Windows XP
U	Security values: N for no security U for strong security I for weak security
en	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en = English
Presto	Layout engine for Opera
2.1.1	Presto version
First visit:	2009.03.03 07:41
Last visit:	2018.07.29 01:18
All Opera user agent strings