Classic Bluetooth is a wireless technology standard used for short-range communication between devices. It allows devices like smartphones, headphones, and computers to connect and exchange data over distances of up to 100 meters. Classic Bluetooth is commonly used for audio streaming, file transfers, and connecting peripherals. This technology operates in the 2.4 GHz frequency range and uses a technique called frequency hopping to minimize interference from other wireless devices. Classic Bluetooth is designed for continuous connections and supports multiple devices simultaneously, making it ideal for applications like wireless speakers and hands-free calling.