Stereo Sport Headset  Headphone Earphone MP3  Player Micro SD TF Slot<br>Description : <br>The wire free head-loop MP3 player is especially designed for sport lovers. Incorporating the behind-the-neck， over-the-ears design， this headset is extremely comfortable and secure for the most users: bicyclist， runners， joggers， walkers etc.<br>Feature: <br>1. Supports MP3 WMA music format.2.Supporting system: Windows 98\/ ME\/ 2000\/ XP\/ Vista\/ 7， iOS3. Doubles as a TF\/ micro SD card reader if connect it to computer.4. Wrap around wire free headphones， designed to stay on your head.5. Comfortable and secure for most users: bicyclist， runners， joggers， walkers， etc.6. Great quality， super stereo sound lets you enjoy your sports and music at the same time7. Just save your loved songs in TF\/ micro SD card and then play them with this sport player.8. Easy to use， &amp;quot; on\/ off &amp;quot; toggle and 3 Key-press : Play\/ Pause， Volume+\/ -(long press)， Previous\/ Next (short press).9. Built-in: Built-inrechargeable li-on battery and charge by USB cable.10.Built-in TF\/ micro SD card slot support up to 8GB TF\/ micro SD card( card not included).<br>Specification:<br>          Port       Mini USB           S\/N Ratio       &amp;ge; 86db           Charge Time       2-3 hours           Playtime       approx. 3 hours           Audio Format       WMA， MP3           Color       black，green，red，blue           Battery       DC 3.7V Li-po battery           Output frequency       20Hz&amp;mdash;20KHz           Headset size       approx. 14 x 13cm\/ 5.5 x 5.1in           Working temperature       0 Celsius degree-45 celsius degree   <br>Note: It only supports play music from memory cards.donn't take FM funtion.<br>Package Included: <br>1 x Stereo Sport Headset Mp3 Player1 x Usb Cable<br>Detail Pictures: