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. Hands-Free calling & Noise Reduction - Bluetooth transmitter built-in microphone,latest CVC8.0 noisecancellation and Digital Signal Processor ()technologies, technology can clearer calls between you and your family and friends. Just click the middle button to answer/hang up/reject/redial calls, wake up and Voice Assistant. 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 effectively safe charging. Multiple play modes &