Colorful Music Mood The car Bluetooth FM Transmitter features colorful mood lighting that can sync with the rhythm of your music, creating a lively cabin atmosphere without disturbing night vision. Rapid power boost Supports PD fast charging and USB charging, so you can fully charge your phone and other devices in the car. Enjoy your music while keeping your gear powered on long trips. Stay connected and safe Builtin microphone enables wireless hands calls, helping you stay connected without compromising driving safety or music enjoyment. Always protected Realtime monitoring of car battery voltage lets you easily check the voltage status and avoid potential hazards. Use scenarios Daily commute or city driving: pair with your smartphone via Bluetooth, stream music, take hands calls, and keep devices charged during the drive. Long road trips or navigationheavy journeys: enjoy music and navigation guidance while PD charging keeps your phone and other gadgets powered throughout the trip. Carpooling or rideshare: passengers can connect their devices for music streaming and charging, while you maintain safe, hands communication. Compatibility and performance notes Bluetooth enabled for wireless audio streaming to your car radio via FM transmission. PD fast charging plus USB charging to support multiple devices at once. Realtime voltage monitoring provides an added layer of electrical safety during operation. Dimensions and durability Compact incar transmitter designed for easy installation and reliable performance during daily use and extended trips.