When you have a vintage car with a tape player, the cassette Bluetooth receiver allows you to enjoy music from your phone without modifying the original audio system. - The Cassette Bluetooth 5.0 receiver is compatible with most smartphones and works well with home or car audio systems. This device enables Bluetooth functionality in cars or audio equipment that do not have built-in Bluetooth. Adjust the audio equalization settings on your player for optimal sound quality. - You can answer phone calls and control music playback directly from the receiver. Features include volume adjustment, play/pause, track skipping, and call answering. Compatible with phones, tablets, MP3 players, car stereos, headphones, Hi-Fi systems, portable speakers, and other devices equipped with standard Bluetooth technology. Delivers seamless stereo audio transmission for high-quality sound performance. - Built-in rechargeable battery provides up to 8 hours of playback and talk time, with 168 hours of standby time. Fully charges in approximately 1.5 hours. Advanced chip technology ensures stable, fast transmission with low power consumption, delivering clear audio performance for an enhanced listening experience during drives. Specifications: Color: Black Bluetooth Version: 5.0 Battery Type: Rechargeable lithium battery Battery Capacity: 130mAh Package included: 1 x Cassette Adapter 1 x USB Charging Cable