A Bluetooth speaker is a portable audio device that connects wirelessly to other devices, such as smartphones, tablets, or computers, using Bluetooth technology. This allows users to play music, podcasts, or other audio content without the need for cables. Bluetooth speakers come in various sizes and designs, making them suitable for different environments, from home use to outdoor activities. Most Bluetooth speakers are battery-operated, providing convenience and mobility. They often feature built-in controls for adjusting volume and playback, and some models may include additional features like waterproofing or voice assistant integration. Overall, Bluetooth speakers offer a simple way to enjoy high-quality sound on the go.