Item Type:Audio Bluetooth Cassette Receiver Material: Plastic Product Size: Approx. 10 x 6 x 1cm / 3.94 x 2.36 x 0.39 in Package List 1 x Audio Bluetooth Cassette Receiver 1 x USB Data Cable 1 x Instructions 1Excellent Audio Quality: The Bluetooth 5.0 receiver is compatible with most smartphones and is suitable for cars or devices that do not have Bluetooth and wish to receive Bluetooth signals. Simply adjust the audio balance setting on the player to achieve good audio quality. 2Easy Control: You can answer calls or control music through the earpiece, change volume, play, pause, skip music, etc. It is easy to use and can also be controlled while driving. 3Simple and Portable: The Bluetooth adapter can transform the original car cassette player into a wireless Bluetooth audio receiver, avoiding cable clutter. It is very portable for daily use and can be carried with you. 4Powerful: With this adapter, you can transfer music, podcasts, and phone audio from your phone or other Bluetooth devices to the car audio system through a Bluetooth wireless connection. 5Easy to Install and Use: Simply insert the adapter into the car card slot and connect your device through Bluetooth. The arrival of the adapter ensures that you will never feel bored while driving.