Parameter: 1. Bluetooth: 5.0 supports two-way transmission 2. Music player: support MP3, WAV, etc. 3. Recording support: FM MIC recording, the format supports MP3/WAV 4. Picture browsing support: BMP JPG format browsing 5. Video format support: MP4 format (need to be converted on the PC through the installation tool) 6. System support: Windows XP / Vista / Window 8 7. Operation mode: touch + button 8. Display type: touch screen 9. Headphone jack: 3.5mm 10. Charging input: 5V 1A 11. Screen resolution: 128x160 12. Menu language: Chinese, English and other languages 13. Function: watch function, game console function, support Bluetooth, picture browsing, TV output, FM radio function, recording function, external speaker function, video output 14. Battery capacity: 3.7v 300mah 15. Charging time: about 2 hours 16. Playing time: 7 hours 17. Display screen: 2.0 inches 18. Interface: USB 2.0 19. Size: 57.5x43.5x11.5mm 20. Net weight: 56g 21. Gross weight: 103g Features: 1. Document text reading support, multi-language support, Bluetooth receiving and sending support 2. Full-screen touch screen, scratch-resistant, wear-resistant, and drop-resistant 3. 2.0-inch high-definition full-screen touch display, convenient and quick control 4. HiFi sound quality, support AVI/AMV video format, hardware acceleration, smooth video, give you immersive visual enjoyment 5. Built-in recording function, which collects the key points and difficulties of the teacher's lectures in class, and listens to practice repeatedly at home 6. Convenient folder classification Create folders for your favorite idols, every time you play it is your favorite 7. Efficient file transfer, free OTG downloader 8. The headphone jack is made of pure copper material to ensure smooth signal transmission, thick and warm timbre audio technology; the headphone, loudspeaker, and Bluetooth can be switched freely 9. Two-way Bluetooth, compatible with more Bluetooth devices, stability and functionality have been deeply improved 10. An English listening app for students, equipped with convenient functions such as eight-level variable speed AB repeat, one-click favorite and subtitle display