The Seiko ER6700 Concise Oxford Dictionary and Thesaurus is a compact and versatile electronic dictionary that offers a wealth of information. It features a comprehensive dictionary with over 240,000 words, a thesaurus with over 4 million synonyms and antonyms, and a grammar guide. The device also includes language learning games, a calculator, and a clock. With its durable design and easy-to-use interface, the Seiko ER6700 is a popular choice for students, writers, and language enthusiasts.