1. MP3 Card reader Headset
2. Option 1: Card Reader w/Headphone.
3. Option 2: Card Reader w/Headphone & Radio. Features:
4. External memory interface:SD/MMC Card.
5. Audio Mp3 headphone.
6. Folding,easy to carry.
7. Display:LCD.Size:20x30 mm.
8. Power supplied for USB. MP3 Section.
9. File support MPEG 1,Layer 3.
10. Sampling Rate (Bit Rate) 32/44.1/48KHz (8Kbps～320Kbps).
11. S/N ratio: About 70dB (1 kHz).
12. Impedance:32ohm +/- 10%.
13. Normal handly Input:10mW.
14. Max. handly Power: 1W.
15. Sensitivity:108+/- 3 dB at 1 kHz S.P.L.
16. Frequency Response:20Hz - 20 kHz.
17. Channel Balance:30 dB at 1 kHz S.P.L.
18. Speaker size:Dia.40mm. 　
19. Thickness of speaker film:16μm. Function Control:
20. EQ (Normal, Rock, Pop, Class and Ultra Bass).
21. Play/Pause/Power on/Stop/Off.
22. Rewind/Fast forward/Hold.
23. Volume +,Volume -. Other:
24. Supported OS Win ME,Win 2000,Win XP,Win98,Win 98SE (Driver is required),Mac OS.
25. With in-line vibration level adjustment. 　 　　
26. Driver unit:40mm dia. Dome. 　 　
27. Battery Capacity:0．4 MAH.
28. Play time:5 hours