Product Features: Car Bluetooth FM Transmitter : BD&M FM car Bluetooth transmitter provides multi-solutions for your hands-free driving and in-car stereo streaming. It features a big display screen offering a wider visual interface for more information, such as incoming phone number, track name, FM frequency, battery voltage, Bluetooth connected device and more. Stronger Microphone for Better Hands-free Calls: BD&M FM car Bluetooth transmitter utilizes stronger microphone, greatly amplify sound reception and strengthen sound quality, bringing a higher level of experience. Treble & Bass Music Streaming: You can stream music directly from your car radio via Bluetooth / microSD card / Aux out, and enjoy free switching between treble and bass mode, the color spectrum auto-syncs with your music. QC3.0 Fast Charging: It Comes with a QC3.0 charging port to deliver high-speed charging to driver and passenger, the charging time is 4 times faster than conventional charging. Bring Voice Service in Your Car : You can stay fully focused on the road by using Siri or Google Assistant to make phone calls, send texts or get driving directions. BD&M FM car Bluetooth transmitter brings voice service in your car.