iON Cassette Adapter Bluetooth lets you wirelessly stream audio from your Bluetooth-enabled devices to your car stereo through an unused cassette deck. Enjoy your favorite music, podcasts, or audiobooks on your car stereo without the hassle of tangled wires. Simply insert the adapter into your cassette player, pair it with your Bluetooth device, and you're ready to go. The built-in microphone allows you to make and receive phone calls hands-free, making your drives safer and more convenient.