Franklin Merriam-Webster ((Speaking)) Spanish-English Dictionary (BES-1850). I really did not test it's functionality. From that stand point it might be fabulous but the fact that I could not read the display screen was sufficient for me to return the device. The letters are blue, the backround is light green. Even after adjusting the resolution I had problems reading the small letters. If you do not have perfect vision I would not recommend this unit.