This device was purchase as a present for someone who enjoys crosswords. The thesaurus is really easy to use (just type in the word and press 'Thesaurus') and the device a good choice of synonyms, which is useful for writing letters or completing those tricky crossword clues! The device will even offer a definition of alternative words that it finds, which is useful if you need to double check.
The devices hidden gem however is the crossword solver tool. Just input a word (minus the letters you don't have), such as ?ER?IN?A?? and the device will fill in the blanks and list all the possible words that match that pattern.
The only problem with this device however is that it's too small. Fair enough; it fits in your pocket - but the buttons are tiny and those with less-than-perfect vision for close range things will struggle.