【QC3.0 & DUAL USB CONNECTION】Maximum charging power! Supports simultaneous charging of two devices, one port is Quick Charge 3.0 port. 4x faster than standard charging efficiency, another USB port with music icons can be used as a charger and USB flash drive that can hold up to 64g. 【FREE SPEECH】Powerful microphone with echo cancellation and CVC (noise cancellation) technology for clear calls. Seamless switching between incoming calls and music enhances safety. 【WIDE COMPATIBILITY】The Bluetooth car FM transmitter can be paired with all Bluetooth-enabled devices in hands-free mode, such as iPhone, iPad, iPod, tablet, Samsung, HTC, Sony and other Android smartphones. 【BLUETOOTH 4.2 LOSSLESS TRANSMISSION】The newly upgraded Bluetooth 4.2 FM transmitter technology provides a more stable FM signal, better anti-interference performance, so you can enjoy your lossless transmission with enhanced stereo music. 【COMPACT DESIGN & ROLLING STYLISH METAL】Sandblasted oxidized apple ash on the surface