Description:  <br> Working distance:10m<br> Voltage: DC5V<br> Battery charge time:2H<br> Loudspeaker: 4&amp;Omega;\/3W<br> S\/NRatio: &amp;ge;95db<br> Frequency response: 200HZ-20KHZ<br> Degree of distortion: 1% 1W 1KHz<br> Dimension: 127x56x42mm<br>  <br> Features:  <br> - Bluetooth audio sound， perfect sound quality and effect<br> - 10M bluetooth transmission distance<br> - Charging 2-3 hours， Playing 6 hours<br> - MODE key (switch to FM radio\/AUX IN\/TF card\/ USB) Switch of Lamplight Mode<br> - Last song\/turn down volum when press longer<br> - Next song \/turn up volum when press longer<br> - Pause \/play press twice to ring up a call \/press once to answer a call \/press short to search station when FM radio<br> - On-Off<br> - TF Card<br> - USB<br> - AUX IN\/Micro USB<br>  <br> Package included:  <br> 1x Bluetooth speaker 1x USB cable