Cutting-edge Bluetooth 5.3 TechnologyBuilt-in newest bluetooth 5.3 chip provides a faster, more stable connection for streaming music, allowing to reconnect the last paired bluetooth device when it is used next time. With its optimized antenna module makes it the most important call function has been qualitatively improved.Unique Hi-Fi Treble and Bass Control FM Transmitter features independent volume, bass, and treble control to get more details of the Hi-Fi music. You can find your favorite music experience by adjusting the treble and bass, and enjoy audiophile grade sound that brings to you. The color spectrum auto-syncs with music, truly brings you party atmosphere(can be turn off).PD 30W Fast ChargingDual USB ports allow you to charge 2 devices at the same time and provide high-speed charging to driver and passenger. Single USB-C PD port (30W Max) can either charge an iPhone from 085% in 30 minutes, or power your MacBook Air M2 2022 with full speed. Another USB port is 5V/2.4A, can charge devices as well as can read music files in U disk(64GB), supports MP3, WMA, WAV, APE and FLAC format.Hands-free Calling & Navigation BroadcastThe built-in microphone equipped with the latest CVC8.0 noise cancellation and Digital Signal Processor (DSP) technologies, works in tandem to collect your voice from all directions. Using the big MFB button answer/redial/hang up/reject calls to free your hands. It also supports broadcasting voice notification from existed navigation Apps, enjoy the smart voice control and play with Siri/Google assistant.Rotatable LED ScreenThe Bluetooth adapter equipped with a 1.38 in LED screen which can better display phone calls, FM channels, music, detect and display your car's battery voltage when the car is started. 180rotatable design offers you with an adjustable viewing angle of LED display screen and easy access for hands-free calling.