Function: 1. [Multifunctional] With this tape adapter, you can answer calls or control music on the receiver, change the volume, play, pause, skip tracks, and enjoy extended playback time. 2. [Compatible] Cassette adapter supports any mobile phone, tablet, MP3 player, car stereo, headset, or other devices equipped with standard Bluetooth technology. 3. [Stereo] Smart design for secure connection, double shielding, polished metal, and corrosion-resistant gold-plated plugs provide high fidelity and seamless stereo sound transmission. 4. [Good performance] Every small component of the tape receiver has been tested multiple times; intelligent noise reduction ensures reliable performance and minimal signal loss. 5. [Easy to use] This cassette adapter allows you to enjoy music from your phone without modifying your car audio system. It is cable-free, simple to use, and offers stable, fast transmission. Specification: Item Type: Cassette Adapter Material: ABS Belt Size: Approx. 10 x 6.4 x 1 cm / 3.9 x 2.5 x 0.4 in Color: Black Battery: Lithium battery, 300mAh Bluetooth: 5.0 Compatibility: Supports any mobile phone, tablet, car speaker, or other devices with standard Bluetooth technology Ideal for home or car audio systems High-fidelity sound, long playback time, stable and fast transmission, no cables required, easy setup How to use: Remove the product and begin using it. Package List: 1 x Cassette Adapter 1 x USB Power Cable