<b>Besign BK03 Bluetooth 4.1 Car Kit with Dual Port USB Car Charger and Ground Loop Noise Isolator for Car with 3.5mm AUX input Port</b> <br> <br><b>Bluetooth V4.1</b> <br>Bluetooth 4.1 technology offers significantly lower power consumption and more stable signal transmission, thus giving you a lossless audio transmission and crystal-clear phone calls and music. <br> <br><b>Adding Bluetooth function with your Car</b> <br>Instant solutions to turn car stereo system into bluetooth wireless environment for hand free calls on the road and access to the music on mobile devices. <br> <br><b>The Ground Loop Noise Isolator for pure music quality</b> <br>With the Ground Loop Noise Isolator, which helps decrease the buzzing noise in some cars while playing music or handsfree calling, thus giving you the better music or calling experience. <br> <br><b>Support two phones simultaneously</b> <br>You can connect with two smart phones with the multi-point support of this Bluetooth AUX adapter <br> <br><b>Siri or Voice Command</b> <br>One Button to activate the Siri or Voice Command <br>In the standby mode, press & hold the Blue Button for 2 seconds to activate the voice command function on Andriod or iOS devices. Refer to the phone manual for detailed instruction if applicable. <br> <br><b>Air Vent Clip for Easy Installation. </b> <br>Special design with Air Vent Clip included, you could install this Bluetooth car kit with your car very easily. <br> <br><b>In the Box</b> <br> Besign BK03 Bluetooth Car Kit <br> USB Car Charger <br> Mounting Sticker <br> Air Vent Clip <br> The Ground Loop Noise Isolator