<p>Features:<br/>Sport MP3 Music Player Handsfree Headphone<br/>Capacity: No memory inside! support 1GB-8GB card<br/>Built-in TF card slot. (TF card NOT included) Just save your songs in your TF card and then get it played with this sport player.<br/>Support MP3 WMA WAV music format.<br/><br/>Descriptions:<br/>Built-in rechargeable li-on battery.<br/>Enjoy your sports and music at the same time!<br/>Be able to use directly as a USB portable disk. Just save your files in it!<br/><br/>Specifications:<br/>S/N ratio: 86db<br/>USB: USB 2.0<br/>Playtime: music playback up to 6 hours<br/>Operating system: Windows 98/2000/XP<br/>Output Frequency: 20Hz-20kHz<br/>Working Temperature:-10~45Degree<br/>Color: Black+Red, Black+Green, Black+Blue, Black<br/>Item size: 145*110*18mm<br/><br/>Package includes:<br/>1 x Sport MP3 Music Player Headphone（Without Bluetooth, wireless mean that the product is head-mounted (headphones Without a line)！）<br/>1 x USB cable  <br/>    </p>