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Sport MP3 Headset
Convenient for sport Voltage: 3.7V USB power 150mAH rechargeable Li-on battery. Playing time 3 hours; USB 2.0 Support: MP3, WMA Memory up to 4GB Key-press: volume+/- , Play/Pause/Previous/Next 16 Level volume control LED indication light Speaker power: 2 x 10mWHeadset MP3 player , portable mp3 player