User Agent String.Com 

User Agent String explained :

Opera 9.63
Opera	Name : Opera
9.63	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
es-ES	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) es-ES = Spanish - Spain
Presto	Layout engine for Opera
2.1.1	Presto version
Last visit:	2017.01.28 01:09
All Opera user agent strings