A Bluetooth speaker is a portable wireless audio device that connects to your smartphone, tablet, or other Bluetooth-enabled device to play music, podcasts, and more without any cords. It delivers rich sound through built-in drivers and often includes features like rechargeable batteries for hours of playtime, easy-to-use controls, and compact, durable designs that are ideal for indoor use, outdoor gatherings, travel, or parties. Many models also offer water resistance, hands-free calling with a built-in mic, and the ability to pair multiple speakers for bigger sound, making a Bluetooth speaker a versatile and convenient way to enjoy audio on the go.