1. Material: ABS/Metal<br> 2. Battery capacity: 900 mAH<br> 3. Standby time: 30 days<br> 4. Charging mode: USB<br> 5. Return one key to the calculator interface (e-book or video interface can return to the calculator state with one key)<br> 6. Backlight brightness: 1-5 adjustable<br> 7. Built-in memory, you can also insert another memory card.<br> 8. Music Playing: Support WMA, WAV and other formats.<br> 9. Image browsing support: JPEG, BMP, GIF format browsing<br> 10. Video playback support: AMV, AVI format video playback<br> 11. 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, Thailand Indonesia, Greece<br> 12. Functions: recording, radio, text document reader, calculator, time and calendar display<br> 13. Weight: 125 g<br> 14. Size: 15.5x7.5x0.9cm