When you have a vintage car with a tape player, the cassette Bluetooth receiver allows you to enjoy music from your phone without replacing or modifying your car's original audio system. - The Cassette Bluetooth 5.0 receiver is compatible with most smartphones and works well with home or car audio systems that lack built-in Bluetooth. This device enables non-Bluetooth equipment to receive wireless audio signals. 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, portable speakers, and other devices 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 1.5 hours. Advanced chipset ensures stable, fast transmission with low power consumption, delivering 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