Parameter: 1. Bluetooth version: 5.0 2. Audio format: APE, FLAC, MP3, WMA, WAV, AAC-LC 3. Video format: AVI 128*160 (conversion tool conversion) 4. Recording format: WAV 5. Picture format: support JPG/JPEG/BMP 6. E-book format: TXT file 7. Operation mode: button type 8. Memory card type: TF card 9. Headphone jack: 3.5mm 10. Support audio format: MP3, WAV 11. Screen resolution: 160x128 12. Menu language: Chinese, English, French, Dutch, Spanish, Russian 13. Function: game console function, support Bluetooth, FM function, recording function, external playback function, e-book reading, direct recording function 14. Battery capacity: 3.7v 250mah 15. Charging input: 5V/1A input 16. Charging time: about 2 hours 17. Display screen: 1.8 inches 18. Interface: USB 2.0 19. Chip model: Huilian YP3-MP3 20. Dimensions: 90.5 x 39.5 x 10mm 21. Net weight: 30g 22. Gross weight: 78g Features: 1. High-fidelity lossless sound quality, born for good music, low distortion rate, close to the original sound 2. Listen anytime, anywhere, FM radio, support FM recording 3. Compatible with the OTG function of Android mobile phones, just connect to the mobile phone, and it is super convenient to transfer files