Instant access to 274,000 definitions and 500,000 synonyms/antonyms. Patented phonetic spell correction—enter a word the way it sounds and the dictionary will provide alternatives for misspelled words. Includes SAT word list, customized vocabulary list and learning exercises and games. Convenient on-screen help and automatic shut-off. Requires two CR-2032 batteries (incl.). Reference Type: Dictionary; Thesaurus; Display: Four-line display; Display Type(s): N/A; Display Characters x Display Lines: N/A.