Bluetooth is a wireless technology that allows devices to communicate with each other over short distances. It is commonly used to connect devices like smartphones, headphones, and speakers without the need for cables. By using radio waves, Bluetooth enables data transfer between devices, making it convenient for tasks like streaming music or sharing files. The technology operates in the 2.4 GHz frequency range and can connect devices within a range of about 30 feet (10 meters). Bluetooth has evolved over the years, with newer versions offering improved speed, range, and energy efficiency, making it a popular choice for modern electronic devices.