For Chinese learning English, the GD390 is an indispensable tool that provides instant English-to-Chinese and Chinese-to-English bi-directional sentence/phrase/word translations and dictionaries. The GD390 provides clear pronunciation in English. Besides, GD390 includes English and Chinese Idiom dictionaries; Specialized technical dictionaries for Computers, Business, Law, Military, Western and Chinese Medicine; Common dialogue phrases for daily, conversions; Convenient travel functions: Calendar, World Clock, Alarm, Calculators, and Metric/Currency Converters; And more, the GD390 also includes Spanish-Chinese/English and Korean-Chinese/English dictionaries.