What is Bluetooth?

Bluetooth is a short-range wireless communication standard that lets devices exchange data over radio waves in the 2.4 GHz band — no cables or Wi-Fi network required. Originally developed by Ericsson in 1994 and now governed by the Bluetooth SIG, each new version has raised the bar: Bluetooth 5.0 quadrupled range and doubled speed over 4.2, while Bluetooth 5.3 reduced connection intervals for lower latency audio. Today it powers everything from wireless headsets and keyboards to file transfers between phones.