Bluetooth 5.3 Chip Extra Large MicrophoneBluetooth fm transmitter uses the latest Bluetooth 5.3 chip to give you a new experience that is faster, more stable and safer. The car-mounted microphone of the car bluetooth adapter expands the recording range and makes every call clear. And the noise reduction technology (CVC 8.0) can filter out various noises in the background noise 30W PD3.0 18W QC3.0 The car bluetooth transmitter is equipped with a 30W USB C PD port and 'one 18W QC 3.0 fast charging port, which supports 2 devices to charge simultaneously to meet more charging needs. Built-in overvoltage protection, short circuit protection and temperature control ensure safe charging 3 Music Modes Bass BoostSOOMFON bluetooth hands-free car kit is equipped with three playback ports: Bluetooth 5.3, AUX cable and TF card port ( 32GB). The most unique is the AUX port, which allows you to hear clearer and more vibrant music sound. Note: An Aux cable is included in the package. By clicking the B button, the music switches to bass boost (Eq1) Wide Applicability Safe DrivingCar bluetooth kit allows you to make calls, send messages or get information routes by activating Siri or Google Assistant, so you can concentrate on driving. Using Aux cables, you can place the car bluetooth transmitter closer to your eyes. The detached design makes the adapter suitable for different models and is safer when driving Rainbow Lighting Effects Voltage MeasurementFM transmitter is equipped with rainbow lighting effects, including a variety of colors. You can set your lighting effects to be always on, have a breathing light effect, or be off. It allows you to enjoy a romantic atmosphere when driving at night. This product is compatible with almost all 12V~24V voltage models and can display the maximum voltage of 9-24V