Advanced Music Technology: Automatically identifies and delivers quality audio playback from TF cards across various brands, providing seamless plugandplay convenience for you to enjoy enhanced sound in the car. Hands Calls: Builtin microphone and speakerphone let you answer or reject calls without taking your hands off the wheel. Stay focused on the road while enjoying clear, reliable calls. Bluetooth 5.3 Connectivity: Fast pairing and stable connections with improved sound quality for both music streaming and calls. Enjoy uninterrupted playback and smooth, hands communication. Broad Compatibility and Car Use: Compatible with a wide range of mobile phones and designed as a car adapter to deliver reliable music playback and hands calling while driving. Use scenarios: Daily commute: Insert a TF card to play your favorite music and use the builtin microphone for hands calls as needed. Long road trips: Connect your phone via Bluetooth 5.3 for continuous music or podcasts and clear hands calls throughout the journey. Carpool or family trips: Quick, hassle setup with a connected phone for music playback and hands communication for all passengers.