TaoTronics Bluetooth Car Kits/Bluetooth Receivers, Bluetooth 4.0 Car Adapter Hands-Free Calling + Dual 2.1A USB Charger (Support aptX, Built-in Microphone, CVC Noise Cancelling, NFC, Magnetic Base) Internal circuitry for better call quality, product stability, and overall lifetime Free Dual USB car charger included, capable of charging two devices simultaneously; Magnetic base is more easily detachable from the controller compared with sticky base Provide a simple hands-free solution for answering and receiving phone calls and streaming music from your Bluetooth-enabled phones while on the go; Echo and noise cancelling technology supply a more clear call quality Latest Bluetooth 4.0 technology, up to 33 ft range, supports pairing two smarts devices at once.Fast NFC pairing with NFC enabled smartphones Support AVRCP technology for easy-to-use music controls; Music player controls - Play, Pause, Previous song, Next song; Talking controls: Answer and reject calls, private call is available. This product can only be used in cars with an Auxiliary Port (AUX).