【QC3. 0 Quick Charge & 2 USB Ports】Never worry about the slow or inadequate charge in your car with bluetooth car adapter. One of the USB port is designed for normally charging or reading U disk, the other one is QC3. 0 quick charge port, which can charge your devices 4 times faster than normal charging ports. | 【Hi-fi Music & 2 Playing Modes】Supporting music playing via U disk (≤32G)/Bluetooth, this bluetooth fm transmitter for car will provide more stereo and crystal sound with its high-fidelity system. It also supports plug and play, as well as various audio format (MP3/WMA/WAV/FLAC). | 【Advanced Bluetooth 5.1 Technology】Bluetooth transmitter for car with advanced Bluetooth V5.1 chip, allowing for faster pairing with compatible devices, better anti-interference performance, and lower power consumption. Bluetooth for car built-in microphone, supporting smart voice navigation from your phone. | 【Answer Calls Hands-free 】Bluetooth car adapter press only one button, you can take a hands-free phone call easily and safely. CVC noise cancellation of bluetooth aux adapter for car can reduce background noises and offer clearer hands-free calling to ensure safer and more reassuring driving. | 【Wide Compatibility 】Bluetooth car fm transmitter can be paired as a hands-free kit with all bluetooth enabled devices. Fit most devices that support Bluetooth function(such as iphone, ipad, ipod, tablet, samsung, htc, sony and other andriod smartphones.), and all vehicle type including car, van and truck(12-24V).