Product Detail English Interface. 450,000 entry bi-directional dictionary. Advanced English speech synthesis pronounces any word 14,000 entry Audio PhraseBook enabled with English TTS pronunciation. English Phonetic transcription. Instant reverse translation. Look-up function. Advanced word recognition. Vector UltimaTM spell-checker. Slang Lock feature to exclude slang from translations. English Irregular verbs. American English Idioms. Electronic English grammar book. SAT 200 and SAT 5000 vocabulary builders. Linguistic games including the ever-popular and effective Hangman. . The "Ectaco EFA500 Partner English-Farsi Talking Electronic Dictionary and Audio Phrasebook" is best product for you. We recommended Ectaco EFA500 Partner English-Farsi Talking Electronic Dictionary and Audio Phrasebook