This electronic version of the Britannica Concise Encyclopedia is the ultimate pocket sized reference library, perfect for home, school or office. Also featuring an Oxford Dictionary and Thesaurus, this device is the ideal portable reference tool. 240000 words. 4000000 synonyms. 25000 of articles. 9000 quotations. 12 word games. Crossword solver. Anagram solver. Abbreviation solver. Phonetic spell correction. 130000 word spellchecker. 1 languages. Calculator and converter. LCD display. Batteries included. Batteries required 1 x AAA .