Bluetooth earphones are wireless audio devices that connect to smartphones, tablets, or computers using Bluetooth technology. They allow users to listen to music, take calls, and enjoy audio without the hassle of tangled wires. These earphones typically come with built-in microphones for hands-free calling and may include features like noise cancellation and touch controls. Most Bluetooth earphones are lightweight and portable, making them convenient for on-the-go use. They usually come with a charging case that provides extra battery life, allowing users to enjoy hours of playback. Many models are designed to fit securely in the ears, ensuring comfort during extended use.