Half the dictionary is Japanese to English and the other half is English to Japanese, with a bit of grammar help in the middle. Being 111×178mm in size, you could hardly call this a pocket dictionary and with about 200 pages of Japanese to English and a large font size, there isn't much Japanese you could translate with this book. Try translate instructions of a Japanese product or finding the lyrics to a Japanese song and I guarantee you would not even be able to translate half of it.