?More Safer & Fast?SONRU bluetooth FM transmitter for car provides multiple protections while you are driving with your devices charging, such as over-heat, over-current, over-voltage and short-circuit. This FM transmitter bluetooth is 95% more efficient than normal, so you can boost your devices from 0% to 85% in just 30 minutes. ?Hands-Free calling & Ultra-Large Capacity USB Port?The built-in Noise Suppression (CVC) design and echo-cancellation can reduce external environmental noise well, providing you a clear hands-free callings. USB flash drive (64GB) port supports WMA, MP3, WAV, APE, FLAC music formats, having you a various music choice. ?Hi-Fi Deep Bass & Backit?SONRU bluetooth car adapter features unique volume, bass and treble control to experience more classic music. You can enjoy the fantastic deep bass music and immersive stereo sound by pressing the ”BASS” button. In addition, 5-color LED will dance with such stronger and powerful music. ?54W Fast Charge?The FM transmitter is equipped with dual PD 36W and QC3.0 18W fast charge ports which can compatible with Samsung, iphone, ipad, BC1.2 and other fast charging protocols.Note: When dual PDs are used at the same time, the maximum of the two ports is 36W, and the maximum output of each port is 36W when used alone. ?Cutting-edge Bluetooth 5.3 Technology?This bluetooth transmitter uses an advanced Bluetooth 5.3 chip, which brings you a faster, more stable and smarter connection with compatible devices.It also optimizes the transmission delay and connection defects of old Bluetooth version,making you experience high-fidelity music like never before!.