AUTO-ON & AUTO-CONNECT: The receiver will power on automatically when you start the car?? then auto sync with the last connected phone (please make sure the Bluetooth of your phone is turned on before starting the car).</br>NOISE ISOLATOR INCLUDED: In most cases?? the sound quality is excellent. But?? if you are bothered by the buzzing noise?? you can use the noise isolator to avoid it.</br>HIGH-SPEED CHARGER: 2 port USB output?? 1A output for the receiver and the 2.4A output for other devices?? it can even charge your iPad at full speed.</br>HANDS-FREE CALLING: Answer phone calls and voice activate from Bluetooth-enabled phones while on the go. Just a single press.</br>ENJOY your favorite music from phone/tablet/MP3. Stream audio through 3.5mm input in car stereo?? such as music?? GPS voice navigation?? and podcast.</br></br>Product Description</br></br><b>Say "ise</b><br><br> Mpow is the ONLY seller in amazon who sells bluetooth receiver with bundling Ground Loop Noise Isolator?? which helps decrease the buzzing noise some cars make while playing music?? thus giving you the best music experience ! <br><br> <b>Bluetooth 4.0</b><br><br> Bluetooth 4.0 technology offers significantly lower power consumption and more stable signal transmission than previous versions?? thus givin