Bluetooth MP3 MP4 Player With External Speaker Radio Music E-book Player 1. Screen size: 2.4 inch 2. Screen resolution: 320 x 240 3. Battery life: about 20 hour 4. Operation: touchscreen + buttons 5. Interface: USB 2.0 6. Headphone jack: 3.5mm 7. Supported audio formats: MP3, WMA, WAV, APE, FLAC, AAC-LC, M4A, OGG 8. Battery capacity: 450mAh 9. Supported languages: Simplified Chinese, Traditional Chinese, English, Greek, Danish, German, Spanish, French, Italian, Hungarian, Dutch, Norwegian, Polish, Portuguese, Russian, Slovak, Finnish, Swedish, Turkish, Japanese, Korean, Hebrew, Arabic, Thai 10. Chip: ATJ2157 11. Weight: about 85.5g 12. Size: about 10.5 x 4.8 x 0.9cm Features: 1. MusicBluetooth playback: supports MP3, WMA, WAV, APE, FLAC, AAC-LC, M4A, OGG, and other formats 2. Recording support:supports FM and MIC recording, formats supported: MP3 and WAV 3. Image playback:supports JPG, BMP, GIF format viewing 4. Video playback:supports AMV, AVI (requires conversion to 320 x 240 resolution format) 5. E-book playback: supports TXT format 6. Additional features: FM radio, folder navigation, Bluetooth, alarm clock, etc. 7. Storage support: Micro SD external storage (expandable up to 128GB memory card) 8. Features: loop playback and A-B section repeat playback 9. Supports 8-level variable speed adjustment