Bluetooth speakers are portable audio devices that use Bluetooth technology to wirelessly connect to other devices, such as smartphones, tablets, or computers. They allow users to play music, podcasts, or other audio content without the need for cables, making them convenient for both indoor and outdoor use. These speakers come in various sizes and designs, often featuring built-in batteries for easy mobility. Many models also include additional features like waterproofing, voice assistant integration, and the ability to connect multiple speakers for a more immersive sound experience.