Dual Microphones & Hands-Free Calling: This Bluetooth Car Adapter utilizes dual microphone, greatly pick up voices from all direction while driving benefited from superior sound reception and noise suppression (CVC) technology effectively reduce road and wind noises. The hands-free car kit make your driving more smarter and safer. Hi-Fi & 1-Key Bass Booster: The FM Transmitter Bluetooth 5.0 with DSP technology could deliver 2x steadier transmission speed without distortion for Hi-Fi stereo music. Music Player FM Transmitter with a 1-key enhance Bass button, you can select your favorite mode between Hi-Fi or deep bass mode by pressing the button "B". Fast Charging 18W & PD 20W: FM transmitter for car Coming with 2 USB ports (Fast Charging 18W and PD 20W), You can charge two devices simultaneously. The PD Port up to 20W output, compatibility with lastest iphone, ipad, cellphones, tablets etc. 7 Colored LED Strip & Music Play Modes: FM Transmitter Bluetooth car adapter supp