?Hi-Fi Bass & Roller Adjustment?Adjusting the bass and treble wheel allows you to enjoy powerful deep bass and immersive stereo sound, Hi-Fi sound quality will also make the music more dynamic and pleg to the ear, take your passion for music to the next level. ?Multiple play modes & breathing light?The bluetooth radio transmitter for car can play music from Bluetooth devices to the car stereo via can play music from Bluetooth devices to the car stereo via FM signals; it can also read music files from USB flash disks (=64GB), supporting MP3, WMA, WAV, APE and FLAC formats. Ambient light breathes slowly and can be adjusted off, so you can see the buttons clearly in the dark. ?57W Fast Charging & Smart Port?The FM transmitter bluetooth is equipped with PD 45W Type-C and QC3.0 12W USB charging.can charge two devices simultaneously. Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, it will effectively ensure safe charging. ?Hands-Free calling & Noise Reduction?Bluetooth transmitter built-in microphone,latest CVC8.0 noisecancellation and Digital Signal Processor (DSP)technologies, technology can ensure clearer calls between you and your family and friends. Just click the middle button to answer/hang up/reject/redial calls, wake up Siri and Google Voice Assistant. ?Newest Bluetooth 5.3 Technology? Bluetooth FM transmitter 5.3 FM transmission technology, you a faster, more stable and smarter connection with less sound quality loss,uninterrupted calls and music experience. It takes only 1 second to complete pairing, and no need to repeat pairing after the first successful pairing with your device.