Deep Bass Mode: One-touch "b" button to instantly enhance low-end frequencies for a richer audio experience. Hands-Free Driving: Built-in high-sensitivity microphone with noise reduction (CVC) for crystal-clear calls. Dual Screen Display: Large digital LED displays both the real-time car battery voltage and the current FM frequency. RGB Atmosphere Light: Blue LED ring light provides a modern look and makes it easy to locate ports in the dark. Voltage Detection: Automatically monitors your car’s battery health when plugged in.