A car stereo is an electronic device installed in vehicles that plays audio from various sources, such as radio, CDs, or digital music files. It typically includes a display screen, buttons, and knobs for controlling volume and selecting tracks. Many modern car stereos also support Bluetooth connectivity, allowing users to stream music from their smartphones. In addition to playing music, car stereos often feature AM and FM radio, as well as options for connecting external devices through USB ports or auxiliary inputs. Some advanced models come with built-in navigation systems and support for smartphone integration, enhancing the overall driving experience.