Drive More Safe - You might need to take a important call while driving, the fm transmitter supports connection to Siri/Google voice assistant and uses voice commands to ensure safe driving. It can connect 2 bluetooth phones simultaneously, let you enjoy music/GPS navigation and auto switch between call and music playback. Four Music Play Modes - Enjoy 4 music playing modes: except for Bluetooth, you can also transfer music in your device to car audio via 3.5 mm audio cable, it support TF card up to 32G and U disk playback. Bluetooth Transmitter can be paired as a hands-free kit with all Bluetooth enabled devices. It support two devices connection simultaneously. Dual USB Ports & QC3.0 Quick Charger - Support two USB ports to charge two devices simultaneously, input 12-24V and output 2 USB ports: QC3.0 fast charge port and 1A charge port which can intelligently identify android or iPhone devices. The USB port supports reading U disk up to 32G. Smart matching current keeps your device fully charged in a short time. Enjoy Music with Dazzling Light - Changeable multi-color LED light, you can short press the light button to change the color, melt the cool light into music and bring more fun for driving at night. Multi Features - You can press one button to answer, hang up, reject, redial phone calls. Support intelligent detection of car battery voltage and automatic power-off memory function. 350-degree rotatable metal hose is highly flexible to adjust for a comfortable viewing angle.