【Upgraded Bluetooth V5.3 Connection】 - Bluetooth car adapter with Bluetooth 5.3 technology optimizes transmission delay and connection issues, enhancing your audio experience with faster, more reliable connections and minimal sound loss. Enjoy seamless calls and music without interruption, and automatically reconnect to known devices for the ultimate convenience. 【Safe and Efficient Charging】 - Equipped with dual USB C car charger ports, you can charge two devices simultaneously. Our intelligent safety features ensure your devices are protected from overcharging, voltage spikes, overheating, and short circuits while charging efficiently. 【Dual Microphones for Noise Cancellation and Hands-Free Calling】 - The built-in dual microphone noise-canceling design significantly reduces external environmental noise, providing clear hands-free calls. The all-in-one button: answer/reject/hang up/recall allows you to switch seamlessly between calls and music on your car radio. 【Powerful Hi-Fi Deep Bass】 - Simply press the deep bass button on the car Bluetooth transmitter to enjoy powerful deep bass and immersive stereo music sound. The high-fidelity sound quality will make the music more dynamic and pleasing, elevating your passion for music to a new level. 【Broader Compatibility】 - Our FM Bluetooth transmitter car works perfectly with various smartphones and vehicles, ensuring a stable connection for uninterrupted music. The wide FM frequency range means you can enjoy a consistent, clear wireless audio experience without interference using your car Bluetooth adapter.