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 works with most smartphones and is suitable for home or car audio systems. It enables Bluetooth connectivity for devices that do not have built-in Bluetooth. Adjust the audio settings on your player to enjoy high-quality sound. - 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, and portable speakers equipped 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 play 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