product description: 1. Trendy shell, innovative lavalier design, ultra-small size. The weight is less than 30 grams, you can clip it at will. Simple, sophisticated and stylish. 2. Supports digital music playback in a variety of MP3 music formats. 3. It can be used as a mobile flash disk to store MP3 songs or data anytime, anywhere. 4. Can be used as TF card reader. 5, also has the function of MP3 and mobile storage disk. 6. Adopt USB1.1/2.0 interface, support hot swap, both plug and use 7. No external power supply required 8. Use a variety of operating platforms WIN98/SE/ME/2000/XP. or above. 9. Storage medium. No mechanical parts, anti-vibration, anti-electromagnetic interference. 10. Built-in high-energy rechargeable lithium battery, long standby time.