Bluetooth is a wireless communication technology that enables devices, such as smartphones, headphones, speakers, keyboards, and computers, to connect and exchange data over short distances without the need for physical cables. It operates using radio waves in the 2.4 GHz frequency range and is commonly used for tasks like streaming audio, transferring files, and connecting peripherals. Bluetooth is designed for ease of use, low power consumption, and secure connections, making it a popular choice for personal and professional device connectivity.