I've known many people with the expensive Casio dictionaries.
But IMHO, they are worth it if you put them to good use.
They contain many specialized dictionaries and lists that you can't
find anywhere else (business, medical, technology,etc).
Until you have become reasonably fluent in Japanese, there probably isn't
so much need for the specialized dictionaries (below I bolded dictionaries that I think are interesting).
Something about this dictionary is that it is packed with study tools.
Maybe you can find free apps here and there that do similar functions,
but these dictionaries have everything in one place (not to mention incredible
battery life. 150 hours for this dictionary).
So yeah, they are overpriced, but for users they are indispensible.
I know a Japanese translator with an older model Casio dictionary from over 5 years ago and it still works beautifully. I wonder if an iPhone could last that long without any issues.
Here is the feature set list:
Display
528 x 320 full dot-matrix liquid crystal indication
117 x 66. 1 mm touch panel
Letter Input Method
Kana, Romaji, Korean and Russian input
Character Size on Screen
* 48 dot, 24 dot, 16 dots for Japanese
* 24 dot, 16 dot, 12 dots for Romaji
Japanese
* Kojien Japanese-Japanese Dictionary (6th Ed.) – Approx. 240,000 entries
* Meikyo Japanese-Japanese Dictionary - Approx. 70,000 entries
* Seisenban Japanese-Japanese Dictionary (3 Volume Set) – Approx. 300,000 entries
* New Kangorin Kanji Dictionary - 14,353 featured kanji, approx. 50,000 words included
* A Dictionary of Synonyms in Japanese - Approx. 25,000 entries (divided into 6,000 groups)
* Zenyaku Kogo Jiten (Classical Japanese Dictionary, 3rd Ed.) – Approx. 22,500 entries
* Comprehensive Japanese Thesaurus – Approx. 1044 categories & 320,000 entries
* Gendai Katakana Dictionary - Approx. 13,700 entries & 1,700 abbreviated words
* NHK Japanese Accent Dictionary - Approx. 69,000 entries
* Meikyo Proverbs Dictionary - Approx. 4,055 entries
* Yojijukugo Dictionary - Approx. 2,653 entries
* Japanese Collocation Dictionary - Approx. 4,000 entries
English
* New Kenkyusha Japanese English Daijiten Dictionary (5th Ed.) – Approx. 480,000 entries
* Leader's English-Japanese Dictionary (Kenkyusha, 2nd Ed.) – Approx. 270,000 entries
* Leader's Plus English-Japanese Dictionary (Kenkyusha) – Approx. 190,000 entries
* Random House English-Japanese Dictionary (2nd Ed.) – Approx. 345,000 entries
* Genius English-Japanese Daijiten Dictionary – Approx. 255,000 entries
* Progressive Japanese-English Dictionary (3rd Ed.) - Approx. 90,000 entries
* The Kenkyusha Dictionary of English Collocations – Approx. 380,000 entries
* Spell Vocabulary by Katakana Dictionary – Approx. 67,000 entries
* New Oxford Dictionary of English – Approx. 355,000 entries
* Oxford American Dictionary (2nd Ed.) – Approx. 250,000 entries
*
Oxford English Thesaurus – Approx. 600,000 entries
* Oxford Collocations Dictionary – Approx. 9,000 main entries & 250,000 total words
* Oxford Advanced Learner’s Dictionary – Approx .183,500 entries
* Longman Modern English-English Dictionary – Approx. 207,000 entries
* Japanese-English Dictionary of Technical Terms – Approx. 1 million entries
* English-Japanese Dictionary of Technical Terms – Approx. 1 million entries
* Oxford Learner's Wordfinder Dictionary - Approx. 630 keywords, 31,000 entries
* Oxford Idioms - Approx. 10,000 entries
* Oxford Phrasal Verbs - Approx. 6,000 entries
* And more
Studying
* Royal English Grammar Guide – 395 entries
* Japan History Encyclopedia – Approx. 6,800 entries
* World History Encyclopedia – Approx. 7,200 entries
* TOEIC English Vocabulary and Phrases Mastery – 2,000 entries
* TOEFL Perfect Vocabulary – 700 entries
* Kanken (Kanji test) Drills for KanKen Levels 2, 3 and 4
* TOEIC Test Idioms 730 – 883 entries
* And more
Business Information
* Nikkei PC Terminology Encyclopedia 2009 – Approx. 5,300 entries
* Nihon Keizai Shimbun Economy & Business Dictionaries Series – Includes economy, management, stock market, finance, real estate dictionaries and more
* Nikkei Business Keywords – Approx. 1,000 entries
*New Business Words English Dictionary – Approx. 11,000 entries
* English Letter Dictionary - Approx 200 examples
*
And more
Life Reference
* Encyclopedia (Mypedia Electronic Dictionary Edition) - 66,000 entries; 1,800 illustrations [the Hitachi system and service]
* Britannica International Encyclopedia – Approx. 154,000 entries (In Japanese)
* Nikkei Health Supplement Encyclopedia 2008 – Approx. 1,000 entries
* Home Medical Encyclopedia – Approx. 5,000 entries
* Japanese Counters Reference Book – Approx. 4,600 entries
* English Listening Crossword Puzzle - Approx. 30 questions
* Japanese Crossword Puzzle - Approx. 30 questions
* National Geographic Visual History of the World - Approx. 650 entries
* And more
English Conversation, Travel, Etc.
* JTB Travel Language Guides (in 12 different languages) – Approx. 2,000 entries each
* English Conversation Dictionary – Approx. 8,000 example phrases
* Travel English Approximately
* Dr. PASSPORT Essential Travel Helpers (in 7 different languages) – Approx. 350 entries each
* English Pronunciation Guide Book
* Kikutan Series (Entry, Basic, Advanced, Super)
* Kikutan Reading Series (Basic, Advanced, Super)
* And more
Additional Functions
* Abundant search functions which can be utilized quickly and easily
* Multiple dictionary example search
* Multiple dictionary jump function
* Example forming phrase jump search
* Word register function/history search
* Japanese & English keyword example search
* Chinese character partial reading search
* Spelling search and common phrase search
* Preview and layout change function
* Back light, 3 letter sizes, favorite dictionary register function
* Two input methods for ON/OFF function, automatic power off
* Dictionary key direct power source ON function and resume
* Phonetic sign indication and simple search mode change
* 12 column portable calculator
* Ultra-high-density liquid crystal (touch panel), large screen longhand panel
* EX-VOICE, voice CD taking function
* Display vertical writing function
* Highlighter word card, study notebook function (memory card/wordbook/finding memo)
* Handwritten input /hand-written operation function/touch operation function of the main panel
Power Source
2 X AA batteries
Electric Battery Life
Approximately 150 hours depending on frequency of use of back light and voice function
Size
Depth 106.5 x width 148.5 x height 16.3 mm (thinnest section when closed), height 18.9 mm (thickest section when closed)
Weight
Approximately 300 g (battery included)
Accessories
* One stylus
* Earphones (3.5 mm plug)
* USB cable
* 2 X AA batteries
Edited: 2010-03-30, 2:00 pm