４ PORTS, FOR EASIER USE: This bluetooth car charger adapter features 2 USB A ports, 1 USB C port and 1 TF slot; The USB-C port supports PD 20W fast charging, one USB A port supports QC3.0 fast charging and the other is used for a U disk or something like a car DVR, the TF slot can read TF card smoothly like a premium card reader. New Bluetooth 5.0 Technology and Auto Memory: UGREEN Bluetooth Car Phone Adapter adopts the latest patent V5.0, which can automatically record FM frequency and compatible devices, pairing twice faster than other bluetooth fm transmitter and keep a stable connection to stream music via FM frequency even sitting on the back seat. Hands-Free Calling and Voice Navigation: The car phone bluetooth adapter supports voice commands that can help you focus on driving by engaging Siri or Google Assistant to call or navigate, it can also answer/redial/hang up/reject calls just by a button One, ensuring you enjoy skip-free switching from music to calls. Turquoise LED display: When you plug the car bluetooth car adapter into the car charger port, the car voltage will be displayed first, then the FM frequency, track and volume, the process will be stored so that you don't have to adjust again next time. The backlit circle makes it easy to identify the rotary knob even in the dark. WIDE AND CAR FRIENDLY COMPATIBILITY: No matter you are driving car/bus/bus/pickup/SUV/MPV/truck, this wireless bluetooth FM transmitter is always ready for you, perfectly compatible with all Bluetooth enabled devices, such as iPhone 13/12/12 Pro, iPad, iPod, Tablet, Samsung, HTC, Blackberry, Sony etc.