This title includes six different ways to search for characters and three comprehensive indexes that let even beginners locate entries effortlessly.
The only limitation is that, althought it has about 3600 characters, there are often 'non-standard' forms, so expect about 2500-3000 differente characters. Some times you come across with kanji not in it, not being that rare.
Halpern invented the SKIP look-up system, which enables you to find a character easily, based on its pattern. You can even look up directly in the dictionary (i.e., not in an index). Of course has the traditional radical index.
I recommend it to any serious student of japanese in the begginer-intermediate level.
Eventually, though, the NTC dictionary will be outstripped by advanced users. Defined characters are half that of other dictionaries (approx. 3000 - compared to the 7000+ of the Nelson's), and the lookup system has no relation to that found in a (Japanese) Japanese character dictionary (i.e., once you advance to the level of using Japanese-language character dictionaries, you will have to re-learn the lookup system - something you won't have to do if you use Nelson's or similar dictionaries).
Until the student reaches the advanced level, however, this is a good, informative and intuitive resource.