1. Universal Compatibility: Our Bluetooth Cassette Adapter is compatible with cars and trucks that have cassette players. Simply insert it into your cassette deck and start enjoying the benefits of wireless music streaming without the need for modifications or complicated installations. 2. Bluetooth 5.1 Technology: Equipped with the latest Bluetooth version, our cassette adapter helps ensure a stable and fast wireless connection. Enjoy audio transmission and seamless music playback with no interruptions or distortions. 3. Low Power Reminder: The adapter features a low voltage indicator and a sound alarm to remind you when the battery is running low. With its intelligent detection of tape operation, it helps reduce battery consumption caused by forgetting to shut down the device. 4. Convenient: Our Bluetooth Cassette Adapter has an external charging structure, allowing you to conveniently listen to music while charging. Experience uninterrupted hours of music playback, whether you're on a long road trip or commuting to work. 5. Wireless Music Streaming: With our Bluetooth cassette receiver, you can easily stream your favorite music wirelessly from your smartphone or any other Bluetooth-enabled device. Enjoy the freedom of wireless connectivity and eliminate the hassle of dealing with tangled aux cables. 6. color: Black 7. material: plastic 8. Different batches may have different appearance, which does not affect use. 9. Package Contents: 1x Cassette Receiver 10. Only the above package content, other products are not included. 11. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.