Hands Free Call: Built-in microphone and handsfree calls function, all in one button for answer/ reject/ hang up/ recall, allowing you to seamlessly switch between incoming calls and music. With anti-interference performance and CVC noise suppression technology, which can effectively eliminates road noise, wind noise and other interferences, ensuring that you enjoy clear call and music streams. You can also get clear voice navigation from your phone's app, which means driving will be saferUpgraded Bluetooth 5.3 & Enhanced HiFi Deep Bass: The FM transmitter uses Bluetooth 5.3 technology, which optimizes the transmission delay and connection defects of old Bluetooth. It can provide a more stable and faster connections, bring you clear call and lossless sound quality music. Experience powerful deep bass and immersive stereo streaming music with the "EQ" button. After successfully pairing with the device for the first time, there is no need to repeat the pairing7 Colors LED Backlight & Battery Voltage Detection: The LED lights features 7 switchable backlit colors (red, blue, green, purple, yellow, cyan and white), creating a colorful driving atmosphere for you. Simply press the "light bulb" button to turn on/ off the lights, or switch light colors. The top of the LED display screen displays the FM channel, and the bottom displays the voltage of the car battery. You can always monitor the voltage of the car battery to avoid problems while driving42W Safe Intelligent Fast Charge: The FM transmitter features a PD 30W Type-C charging port and 5V/2.4A (Max 12W) USB charging port, can quickly charge two devices simultaneously. Built-in over-current protection, over-voltage protection, short circuit protection, intelligent temperature control, it will effectively ensure safe charging. It fits 12-24V cigarette lighter sockets of all vehicle types including cars, vans and trucks