Clear sound: Bluetooth version 5.0, faster and more stable anti-interference Bluetooth transmitter updated version with sound processing technology and noise reduction to bring you better stereo music and clear paging processing: Bluetooth adapters can be easily connected to the vent sequencing dashboard. You can go directly from the car radio via Bluetooth/.Multicolor LED backlight can be used to illuminate the transmitter and tune to different music to enjoy music anytime QC3.0 fast charging car bluetooth FM transmitter with 2USB port can charge two devices at the same time.QC3.0 charging is faster than standard charger.Other USB ports support 5V/2.4A output. Significantly shortens charging time compatible with in-car Bluetooth adapters compatible with most Bluetooth-enabled devices such as IOS, tablets and other Android smartphones.itis also works with all cars/trucks (12-24V).