Spec : Device Type: EI-428 Battery Type: CR-2032 LCD Colour: No LCD Display: 4 Line LCD Display Size: 105 x 65 x 12 mm Weight: 50 gr Deskrip : FEATURES 4 Dictionaries 1. English - Indonesian 2. Indonesian - English 3. Indonesian - Indonesian 4. Idiom English - Indonesian Conversation 1. Basic Conversation 2. Air Travel 3. Transportation 4. Hotel 5. Restaurant 6. Shopping English Vocabulary 1. Synonym 2. Antonym 3. Irregular Verb 4. Tenses Organizer 1. Phone Book 2. Memo 3. Scheduler TIME 1. Local Time 2. World Time 3. Alarm 4. Calendar 12 - Digit Calculator 1. Calculator 2. Scientific Calculator System Setting 1. Contrast Adjust 2. Password Setting 3. Key Tone 4. Auto Off Time 5. Sound Control