Bluetooth is a wireless short-range communications technology standard found in millions of products we use every day – including headsets, smartphones, laptops and portable speakers. A product with Bluetooth technology, such as a Bluetooth headset, has a tiny computer chip inside that contains the Bluetooth radio, and software that makes connectivity between devices possible.
So when Bluetooth-enabled products, such as a cell phone and headphones, are in close proximity to each other, they connect, or pair. A single Bluetooth headset can even connect to multiple devices at the same time. This enables you to talk on the phone or listen to music without the bother of wires or cords.