This new handheld contains Merriam-Webster"s Collegiate Dictionary, 11th edition including biographical and geographical entries. The dictionary speaks over 500,000 clear and concise definiteions and the thesaurus contains 500,000 synonyms & antonyms. The reference set also contains Merriam-Webster"s Concise Dictionary of English Usage, Guide to Punctuation and style, and Dictionary of Quotations. Also includes a USB link (PC or MAC) that will allow a user defined personal dictionary of up to 500 entries of Excel compatible csv file format to be downloaded to the unit.