Cutting-edge Bluetooth 5.3 TechnologyThis 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! 54W Fast ChargeThe 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. Hi-Fi Deep Bass & BackitSONRU 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. Hands-Free