Multi-function Portable 2.4 inch Display Screen E-book Calculator,Support Sound Recording Radio Music & Video PlayingPicture Browsing1. Material: ABSMetal2. Battery capacity: 900 mAH3. Standby time: 30 days4. Charging mode: USB5. Return one key to the calculator interface (e-book or video interface can return to the calculator state with one key)6. Backlight brightness: 1-5 adjustable7. Built-in memory, you can also insert another memory card.8. Music Playing: Support WMA, WAV and other formats.9. Image browsing support: JPEG, BMP, GIF format browsing10. Video playback support: AMV, AVI format video playback11. Support 24 languages: Simplified Chinese, Traditional Chinese,English, Japanese, Korean, French, German, Italian, Dutch,Portuguese, Spanish, Swedish, Czech, Danish, Polish, Russian,Turkish, Hungarian, Romanian, Arabic, Hebrew, ThailandIndonesia, Greece12. Functions: recording, radio, text document reader, calculator, time and calendar display13. Weight: 125 g14. Size: 15.5x7.5x0.9cm