1Universal Compatibility: Fit for all cars and trucks with cassette players, direct use of the original car built in cassette device Cd player, no modification and easy to use. 2Bluetooth 5.1 Technology: Equipped with the latest Bluetooth version, this cassette adapter ensures stable and fast wireless connection, allowing you to enjoy music without any interruptions. 3Low Power Reminder: When the battery is low, there is a low voltage indicator and a sound alarm, intelligent detection of tape operation, reduce the battery consumption caused by forgetting to shut down. 4Covenient: External charging structure, convenient to listen to music while charging, better experience, ensuring hours of uninterrupted music playback on the go. 5Wireless Music Streaming: With the Bluetooth cassette receiver, you can easily stream your favorite music wirelessly from your smartphone or other Bluetooth enabled devices.