The M30 Bluetooth Car FM Modulator is a compact, multi-functional in-car device designed to seamlessly integrate digital music streaming and hands-free calling into any vehicle with an FM radio. This modulator plugs directly into your car's 12−24V cigarette lighter socket and uses Bluetooth 5.0 technology to connect wirelessly to your smartphone or other compatible device. It transmits audio—including music, navigation prompts, and calls—to your car stereo system via a selected FM frequency. Beyond audio, it functions as a powerful car charger with dual USB ports, one featuring Quick Charge (QC) 3.0 technology for rapid charging, and the other supporting 5V/1A charging and music playback from a USB drive. Its design incorporates an LED display and built-in noise-suppression technology for clear, safe, and enhanced driving convenience.