A portable speaker is a compact audio device designed for easy transport, allowing users to play music or other audio content anywhere. These speakers often connect to devices like smartphones or tablets via Bluetooth, making it simple to enjoy sound without the need for wires. Many portable speakers are battery-powered, providing hours of playback time, which is ideal for outdoor activities, parties, or travel. They come in various sizes and styles, often featuring water resistance for added durability. Popular brands include JBL, Bose, and Sony, each offering unique features to enhance the listening experience.