Superior Sound QualityThe car Bluetooth audio adapter is designed for excellent sound quality fidelity, equipped with a stereo two-channel audio transmitter to achieve stereo surround, which ensures that there will be no obvious loss of sound quality when you enjoy music, providing a better listening experience than traditional tapes, so you can enjoy classic music!Answer Calls with One KeyExperience seamless call connection, with the Bluetooth cassette adapter, you can answer the call with just the touch of a button, and enjoy a convenient calling experience. While driving, you can talk safely through the hands-free system to ensure driving safety. Enjoy the freedom and fun of wireless audio.Strong CompatibilityThe Bluetooth 5.0 chip ensures more stable and faster transmission, allowing you to take full advantage of the device's features. The 5.0 Bluetooth cassette adapter is compatible with most smartphones, allowing you to easily enjoy music while driving, adding to the fun of driving!Extra-Long Play TimeThe built-in battery provides up to 8 hours of playback and talk time, and can be fully charged in just 1.5 hours. Ensure you enjoy uninterrupted music and conversations on the go. When the adapter is charging. The red light turns to blue to indicate that the battery is fully charged.What You Get1 Pack of Bluetooth 5.0 Receiver Cassette Adapter, Product Manual and 1 USB Charging Cable. If you are not satisfied with our Bluetooth 5.0 Receiver Card Adapter in any way, please contact us first, we will try our best to solve any problems for you.