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. This compact Bluetooth receiver is designed for cars or devices that lack built-in Bluetooth capability. Simply adjust the audio equalization settings on your player to enjoy high-quality sound. You can answer phone calls and control music playback directly from the receiver, including volume adjustment, play/pause, track skipping, and call answering. It supports phones, tablets, MP3 players, car stereos, headphones, Hi-Fi systems, portable speakers, and other devices equipped with standard Bluetooth technology. It delivers seamless stereo audio transmission for an enhanced listening experience. The built-in rechargeable lithium battery provides up to 8 hours of play and talk time, with 168 hours of standby time, and fully charges in just 1.5 hours. A premium chip 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