Product Description:<br>Bluetooth Function <br>USB/TF Card Slot, Support MP3 Format <br>Built-In FM Radio <br>Compatible with Laptop/MP3/MP4 Player and External <br>Audio Devices with 3.5mm Stereo Output Jack <br>Rechargeable Lithium Battery <br>Dual Speakers <br>Built-In Microphone <br>Hands-Free Call Feature <br>the main technical parameters. <br>transmission distance:10m. <br>rated power:3W <br>playtime:5-8 hours. <br>S/N:80db. <br>distortion:1%w1KHZ <br>charging time:2-4 hours <br><br>imageimage<br><br><br>image<br><br>HEAR THE TRUTH,WIRELESS SOUND SYSTEM WITH RECHARGEABLE BATTERY BT STREAMING AND LED LIGHT SHOW.