ECTACO Partner EV500 English-Vietnamese Talking Electronic Dictionary and Audio PhraseBook Translate 580,000 words between English and Vietnamese; 14,000 phrases, too. User-friendly English interface. All the functions are available on the main screen for easy accessibility. Easy to read LCD screen, side volume control, many extra utilities including a scheduler. Advanced word recognition: look up words just by typing the first few letters. Runs on 2 AAA batteries, and the batteries are included.