Function: 1. [Multifunctional] This tape adapter allows you to answer calls or control music playback, adjust volume, play, pause, and skip tracks with extended play time. 2. [Compatible] The cassette adapter works with any mobile phone, tablet, MP3 player, car stereo, headset, or other devices equipped with standard Bluetooth technology. 3. [Stereo] Features a smart design for secure connection, double shielding, polished metal construction, and corrosion-resistant gold-plated plugs for high-fidelity, seamless stereo sound transmission. 4. [Good Performance] Every component of the tape receiver has been rigorously tested to ensure reliable performance, intelligent noise reduction, and minimal signal loss. 5. [Easy to Use] Enables you to enjoy music from your phone without modifying your car's audio system. Cable-free setup with stable and fast wireless 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 playing time, stable and fast transmission, no cables required, simple operation How to Use: Remove the product and use it directly. Package List: 1 x Cassette Adapter 1 x USB Power Cable