Hands-free Calling: Built-in microphone and hands-free calling function with a one-button control to answer/reject/hang up/redial, allowing you to seamlessly switch between incoming calls and music. Crystal Clear Audio: Featuring anti-interference performance and CVC noise reduction technology, effectively eliminating road noise, wind noise, and other distractions, ensuring clear calls and music streaming. You can also enjoy clear voice navigation from your phone app, making driving safer. Upgraded Bluetooth 5.3 & Enhanced HiFi Deep Bass: The FM transmitter utilizes Bluetooth 5.3 technology, optimizing transmission delay and connection defects of older Bluetooth versions. It provides more stable and faster connections, delivering clear calls and lossless audio quality music. Experience deep, powerful bass and immersive stereo music streaming with the EQ button. After the first pairing, no need to repeat the process. 7-Color LED Backlight & Battery Voltage Detection: The LED lights offer 7 selectable backlight colors (red, blue, green, purple, yellow, cyan, and white), creating a colorful driving atmosphere. Simply press the LAMP button to turn the lights on/off or change the colors. The upper part of the LED screen displays the FM channel, and the lower part displays the car battery voltage. Monitor your car battery voltage at all times to avoid potential issues while driving. 42W Safe Intelligent Fast Charging: The FM transmitter features a 30W CE Type PD charging port and a 5V/2.4A (Max 12W) USB charging port, allowing you to quickly charge two devices simultaneously. Built-in overcurrent protection, overvoltage protection, short circuit protection, and intelligent temperature control effectively ensure a