I purchased this dictionary, not for all its features, but for the clear definitions it has. It uses the New Oxford American Dictionary database, which has very clear definitions. The definitions are generally very clear and concise, and if you misunderstand a word in the definition you are looking up, you can easily jump to the other word to get it defined, then come back to the original definition. It also finds definitions for words fast, and prompts you with suggestions quickly if you misspell the word you want to get defined. It would be nice if it had PDA features, for notes and phones numbers, etc., but overall, if you are looking for a dictionary that is easy to use, easy to read, and has clear definitions, this one fits the bill.