iPod touch 4th generation reviews on wikipedia
Here is  the detail of ipod touch 4th generation reviews on wikipedia. You can browse it, and get more information abaud ipod touch 4th generation
http://en.wikipedia.org/wiki/IPod_Touch


Ipod touch 4th generation reviews-Offcial manufacture
You can read many details specification and information in their manufacture official site.
http://www.apple.com/ipodtouch/specs.html