Versatile Music Playback: This car bluetooth adapter features bluetooth 5.0, an AUX output(with cable) and U-drive port, giving you multiple options to play your favorite music from various sources and enjoy a personalized in-car audio experience. This bluetooth FM transmitter supports MP3/WMA/WAV/APE/FLAC formats and USB disk up to 64GB, with options for FM frequency or 3.5mm audio cable connection. | Convenient All-in-One Button: The One-button operation on this bluetooth transmitter enables you to seamlessly answer, hang up, or decline phone calls without having to touch your phone, ensuring a convenient and safe hands-free calling experience while driving. Press and hold the knob button of this bluetooth adapter to easily switch songs, change FM frequency, adjust voice volume, and make hands-free calls. | Dual USB Charger: This bluetooth adapter comes with two USB ports for convenient charging of your devices on the go, including 1* 5V 1A port for regular charging and 1* QC3.0 port with fast charging options (5V3A/9V2A/12V1.5A) for compatible devices, ensuring your devices stay charged during your car journeys. | Advanced Safety Protection: With built-in over-current, over-voltage, short-circuit, and over-temperature protection, this bluetooth adapter ensures the safety of your devices and prevents any potential damage caused by power fluctuations, giving you peace of mind while using it in your vehicle. | Wider Range & Compatibility: This bluetooth FM transmitter is compatible with all 12-24V cars/trucks, allowing you to easily find a clear frequency and use it in various vehicles for a seamless audio experience.