Noise reduction and high sound quality: Bluetooth car adapter utilizes noise reduction technology to effectively reduce road noise, providing you with clear and crisp hands-free calling sound quality. Additionally, high-quality music streaming ensures crystal-clear sound quality while enjoying music or hands-free calls. This allows you to enjoy music or chat freely while driving, without worrying about the impact of noisy environments | PD and QC 3.0 Fast Charging: The bluetooth car adapter is equipped with PD 20W Type-C and QC3.0 USB charging port, which can provide 80% faster charging speed than ordinary ports. And 1 additional USB charge port (5V/1A) can also be used as a U disk port to play music. You can simultaneously charge 3 compatible devices. | 7 Color LED Backlight Modes: This Bluetooth car adapter features 7 different color lighting modes and 1 cycling color mode, delivering stunning visual displays. You can choose to keep one color or have colors rotate in a loop. This lighting effect is especially beneficial for nighttime driving, as it not only enhances the aesthetic appeal but also improves driving safety. Make your driving experience more enjoyable and secure with this feature-packed Bluetooth car adapter. | Safety Functions: Safety first. fm transmitter bluetooth for car is equipped with a voltmeter to show you the condition of your car battery. The car should be between 12.4V and 14.8V when normal, if it is below 12.4V you need to check if the car needs maintenance. | Wide Compatibility: The fm transmitter bluetooth for car is compatible with most devices on the market, such as iPad, iPhone, iPod, HTC, Galaxy, Sony, MP3 player, tablet and Android Smartphones. You can play your favorite songs on your car stereo via Bluetooth, U Disk.