Car Bluetooth FM Transmitter: The car Bluetooth transmitter provides multiple solutions for your hands-free driving and car stereo streaming. It has a large display that provides a wider visual interface to display more information such as caller ID, track name, FM frequency, battery voltage, Bluetooth connected devices, and more.Stronger microphone, better hands-free calling: The stronger microphone is adopted, which greatly amplifies the sound reception, enhances the sound quality, and brings a higher level of experience.Treble and Bass Music Streaming: You can stream music directly from your car radio via Bluetooth/microSD card/auxiliary output, enjoy free switching between bass and treble modes, and the color spectrum automatically syncs with your music.[QC3.0 fast charging]: Equipped with QC3.0 charging port, it provides high-speed charging for drivers and passengers, and the charging time is 4 times faster than traditional charging.[Voice service in the car]: Make calls, send text messages or get driving directions through the voice assistant, and you can concentrate on the road. Bring voice services to your car.