Convert your cassette player to a Bluetooth device and enjoy wireless o streaming with Bluetooth 5.0 technology. Ideal for use in your car or at home. Supports Bluetooth calling functions for hands-free answering and making calls. Enables stereo music playback with support for o formats including AAC and MP3. Compatible with Bluetooth 5.0 and offers backward compatibility with earlier versions such as 4.2, 4.0, 3.0, and 2.1. Features a built-in lithium battery for convenient power supply. Note: Product appearance, color, and printed characters may vary slightly between batches, but this does not affect functionality. Color: Black Material: ABS Package Contents: 1 x Cassette player Please note: Other items shown in images are not included. Note: Lighting effects and monitor settings may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3 cm.