The Canon Wordtank G55 has the following dictionaries:
* Fifth Edition Kenkyusha Dictionary with 97,000 entries
English to Japanese
* Reader's Dictionary with 270,000 entries
* Reader's Plus Dictionary with 190,000 entries
* Kenkyusha Usage Dictionary with 380,000 entries
* Concise Oxford English Thesaurus with 365,000 entries
* Oxford English dictionary with 80,000 words
* Oxford Collocations Dictionary with 9,000 entries
* Kanji dictionary with 13,112 entries (plus numerous compounds).
* Super Daijirin Japanese / Japanese dictionary with 250,000 entries. (Superior to the Kojien)
* Japanese thesaurus with 79,000 entries
* Concise Katakana dictionary with 52,500 entries.
* Multiple dictionary search
* English phrase search feature
* Wildcard entry for both '?' and '*' Jump key to quickly go to or from all 4 dictionaries.
* English spell check function
* Wild card searches
* Menus display in English or Japanese
* Large history function and more!
The J-E Kenkyusha is sufficient for most purposes, although for advanced translation work you might want to get the full version (the Green Goddess) which is available on Wordtank G70 and other brands (Seiko).
The Reader's Dictionaries are also helpful, although some Reader's Plus entries duplicate the Reader's entries, so the extra 190,000 entries are not really that useful.
The Kenkyusha English Usage Dictionary is excellent, with 380,000 entries and lots of examples.
The Kanjigen is also sufficient for kanji, but it has only a limited collection of compound words.
Bottomline: good compilation of dictionary for the price, with English menus at that.
The G55 has no space bar capability. In lieu of the space bar, they have the ampersand (&), which is essentially an "AND" operator. Curiously, if you type "waste&time" and "waste&of&time" in the Kenkyusha Usage Dictionary, you would get different results.
The G55 also has NO BACKLIGHT which makes it difficult to read under low-light conditions, especially with fluorescent lighting.
The Jump function is also helpful, but is time-consuming.