Quick Charge 3.0 and dual USB port - Highest charging performance. Supports charging two devices at the same time - One port is the Quick Charge 3.0 port, delivering 4x faster charging than standard - The second USB port (marked with music symbols) can be used as a charger and as a USB flash drive, up to 64 GB Hands-free and music streaming - Streams music and calls from your mobile devices to the car radio system via the FM signal - Built-in microphone with echo cancellation and CVC noise suppression for clear calls - Seamless switching between incoming calls and music for safer driving Wide compatibility - Bluetooth car FM transmitter can be paired as a hands-free device with all Bluetooth-enabled devices such as iPhone, iPad, iPod, tablet, Samsung, HTC, Sony and other Android smartphones Loss-free Bluetooth 4.2 transmission - Updated Bluetooth 4.2 FM transmitter technology provides a more stable FM signal and better interference performance - Enjoy lossless transmission with improved stereo music Use scenarios - Daily commute: make hands-free calls and listen to music while charging two devices - Road trips: charge devices and play music from a USB flash drive up to 64 GB - Shared vehicles or guest use: easy to pair with different Bluetooth devices for hands-free calls and audio streaming