SA-309 Spelling Ace Pro & Puzzle Solver. * Crossword Puzzle Solver using Merriam-Webster Word List, including Biographical and Geographical References. Word Builder uses the letters entered to create a list of possible words to help solve Anagram puzzles. * Thesaurus with 500,000 synonyms & antonyms. Confusables Function identifies and explains sound-a-like words, i.e. affect: impress vs. effect: result. * Classmates Feature provides words in a similar category, i.e. tiger, cheetah, jaguar, leopard, lion, etc. Word Games & Exercises, including Hangman, Anagrams, Jumble, Spelling Bee, Word Builder, Word Blaster, Word Deduction and Word Train. * SAT and User Word Lists. Timer feature for timed tasks. Uses 2 AAA batteries (not included).