Seiko ER-9000 Oxford/Britannica Electronic Reference Library Summary:
The ER9000 is the world's first "Smart Dictionary" that can jump instantly to synonyms or definitions in the correct sense for the word you are looking up. It also features a unique indexing structure, enabling you to create literally thousands of lists of related words by subject, category or name.
The Seiko ER9000 display screen can be switched to Large, Middle or Small.