[DUAL SCREEN DISPLAY & 7 COLOR LED BACKLIT] The FM Transmitter Bluetooth car adapter supports dual-screen display, The above screen shows the FM channel, The below screen shows the car battery voltage to keep you up to date on the condition of the vehicle. Check the car voltage any time, worry-free driving. 7 single-color lighting modes as well as 1 breathing mode that can get a visually stunning display of colors, help you easy use in the dark, safer for driving. [HANDS-FREE CALL]Built-in microphone support noise suppression (CVC) technology effectively reduce noises. Grants you a crystal clear call to reduce interference. One-click the button to answer/redial/hang up or reject calls, you can keep your eyes on the road making your driving more interesting and safer. [3 MODES FOR MUSIC PLAY]Play music from Bluetooth-enabled devices; Stream music from TF card(64GB); Transmit music from USB flash drive(64GB). No matter what device you use, this Bluetooth radio transmitter enables you to enjoy a music feast in your car.DSP technology could deliver steadier transmission speed without distortion for stereo music. [42W PD & QC EFFICIENT CHARGING]The Bluetooth Adapter Car can fast charge two devices simultaneously via the PD3.0 and QC3.0 port (42W in total). The PD Port can fast-charge Note 20 Ultra, iPhone 12, Pixel 3, etc in a short time. The QC port up to 4x speed of the conventional charging. [SAFE TO USE]Built-in over-current protection, over-voltage protection, short circuit protection, effectively prevents multiple problems. Bluetooth FM transmitter for car*1, User Guide*1.