PD & QC USB Fast Charger: The car Bluetooth FM transmitter can fast charge two devices simultaneously via PD 18W and QC 3.0 port, 4X faster than standard chargers. In addition, it also features a USB charging port (5V/1A) as a USB flash drive port to play music. Enhanced Micporhones: This Upgraded Bluetooth Car Adapter utilizes stronger 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. 7 Color LED Backlit: Bluetooth FM Transmitter supporting 7 colors led backlit light, including Red/ Green/ Blue/ Yellow/Orange/ Purple/ Cyan, this Bluetooth fm transmitter will give you a visually stunning display of colors, which is a nice way to match the colors already in the carand also makes it easier to operate and drive at night.Equipped with an LED voltmeter that shows you the condition of your car battery to keep you up to date on the conditio