Feature:<br>1.This equipment can detect battery's voltage.<br>2.Support Bluetooth hands-free phone calling via its build-inmicrophone.<br>3.Support mobile's A2DP function. Music will be played directly while the mobile phone is cannected.<br>4.Mobile phone can be connected automatically when the device poweredon.<br>5.Support an external TF card/U disk, can play music files in MP3/WMA format.<br>6.Integrated car charger of output 5V/2.5A, is available for charging handheld devices in car.<br><br>Specification:<br>USB Output 5V/2.5A<br>Working Temperature 0~60℃<br>SNR &gt;90dB<br>THD &lt;0.05% <br>Bluetooth Version Version 3.0+EDR <br>Bluetooth Transmission Distance &lt;10M<br>Frequency Range 87.5-108MHZ<br>Package Included:<br>1 X Bluetooth Car Charger <br>1 X 3.5mm cable<br>1 X User Manual