Excellent dictionary, best I have seen.

This shirt pocket sized dictionary contains a quarter of a million definitions from the Oxford American Dictionary which, in my opinion, is the absolute best dictionary of the English language for American usage. It has zoom, jump, and return buttons to adjust font size and take hyperlinks from one definition to another and back. It has authoritative grammar and punctuation information and includes literary context examples. It has a thesaurus and a spelling aid and a puzzle aid.

I wish something like this existed when I was in school. Looking up information is now so quick and easy, there's never a reason not to do it.

My biggest problem with this product is that I only bought one. Everyone wants to use it so I can't keep it with me all the time.