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. No need to replace or refit your car stereo, preserving its classic integrity. - The cassette Bluetooth 5.0 receiver is compatible with most smartphones and works well with home or car audio systems. This device enables Bluetooth connectivity for cars or audio devices that do not have built-in Bluetooth. Simply adjust the audio settings on your player to enjoy high-quality sound. - Answer phone calls and control music directly from the receiver. Features include volume adjustment, play/pause, track skipping, and call answering. Supports phones, tablets, MP3 players, car stereos, headphones, Hi-Fi systems, and portable speakers with standard Bluetooth technology. Delivers seamless stereo audio transmission for an enhanced listening experience. - Built-in rechargeable lithium 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 for superior audio performance. 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