【3 USB Port & QC3.0 Quick Charge】Clydek Bluetooth car fm transmitter supports QC3.0, 4X faster than standard chargers, charging efficiency over 80%. Another USB charging port can intelligently identify Android or other devices. The extra USB port is used for U disk reading. Built-in smart IC, over-current protection, over-voltage protection, intelligent temperature control and short circuit protection, can better protect your car and smart devices. | 【Hands-free Calling & Clear Stereo Sound】The car Bluetooth adapter adopts CVC noise reduction technology to suppress noise and wind. It offers crystal clear and loud voice without any static interference while talking or listening. Built-in microphone, allows you to answer/hang up/ reject/ redial a call with just 1 button click. | 【Smart Broadcast Navigation】The bluetooth wireless fm transmitter supports Siri or Google Assistant. You can stay fully focused on the road by using this function to make phone calls, send texts or get driving directions, making your driving easier and more convenient. | 【4 Music Playing & Remote Control 】The Bluetooth adapter for car supports 4 music playing modes, work with TF card, U disk , Bluetooth and Aux line. Support the 21-key remote control, get your things done faster and more convenient, everyone in the car can control the music playing or talk freely. Adopted A2DP and anti-static technology to create full-duplex sound quality, bringing you lossless music. | 【High Performance Bluetooth FM Transmitter】Long press the button to power off and no need plug or unplug it out from your car socket every time. Don't worry that it will damage your car battery, you can use it safely and easily. Every car fm radio adapter will go through a strict quality test before sending out. We promise to bring the top quality to our customers. Fastest response within 24 hours. We are always here for you!