Avantree Car Bluetooth AUX Receiver, 4.0 aptX for Quality Music and Call, Streaming to Car Stereo, Wireless Handsfree with 3.5mm Input - Cara II For safety and convenience when you're in the car, this Bluetooth handsfree car kit auto-connects with your smartphone when start to charge it (start your engine), and it then routes calls and music from your phone to the car's speakers (Require a 3.5mm AUX-In socket in your car). Stay up to date with your car kit's status with voice prompts that alert you when your car kit is connected or running low on battery. (With Pairing, Your phone is connected and Battery low voice prompts) The multi-point support of this Bluetooth aux adapter allows you to connect 2 devices simultaneously. The car kit also comes with a 2.1A dual USB car charger and is compatible with iPhones(iPhone 6 and iPhone 6 plus), iPads, HTC, Samsung devices, and more. Enjoy music with CD-quality sound, thanks to the aptX decoder. And, the 3.5 audio output and micro USB charging port enables you to use your own audio and universal micro USB cable. This portable Bluetooth car speakerphone's magnetic base allows you to easily detach it from the controller, and with 26 days of standby time and 10 hours of talk time, you can enjoy using your handsfree car kit even on long journeys.