A car stereo is an electronic device installed in vehicles that allows users to play music and audio from various sources. It typically includes a radio tuner, CD player, and connections for Bluetooth, USB drives, and smartphones. Modern car stereos often feature touchscreens and can integrate with navigation systems. In addition to playing music, car stereos may offer features like equalizers for sound customization, hands-free calling for safety, and compatibility with streaming services. Many models also support Apple CarPlay and Android Auto, enabling seamless access to apps and navigation directly from the stereo interface.