Mini necklace mp3 with touch pad

1. Media format: MP3, WMA

2. USB interface: USB 2.0 / 1.1

3. Data retention: up to 10 years

4. OS support Windows XP / 2000 / ME, Linux 2.4 and above, MAC OS 9.0 and higher, Windows 98 / 98SE (with driver)

5. Built-in rechargeable battery

6. No built-in microphone, no display

7. Accessories: earphone, user manual

Packing: crystal glass box