Classic design: The car tape has a retro design and is a good decoration for your car. The metal case makes the 3.5mm cassette adapter the perfect choice for those who take audio seriously. High quality sound: with 3.5mm audio jack for most mp3, mp4, computer and other playback devices. Seamlessly transmit stereo audio for high-quality sound, letting you listen to music anytime, anywhere! Convenience: When you have a car with a tape player, your iPhone only has a charging port and no 3.5mm auxiliary port. The cassette adapter and smartphone to 3.5mm headphone jack adapter will allow you to continue to enjoy the music on your phone. , Compatibility: Support any phone, tablet, MP3 player, car stereo, headphones, Hi-Fi, portable speakers or other devices equipped with a standard 3.5mm audio jack or AUX input port, just adjust the audio balance on the player Set, you will get a music classic! Simple operation: our tape is easy to use, plug and play, no external power supply required. When you have a 3.5mm audio jack or AUX input port, you can use it immediately.