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Bluetooth is a short-range wireless technology standard used to exchange data between nearby fixed and mobile devices and to build personal area networks (PANs). It is commonly used as a wire-replacement alternative for connecting devices such as phones, computers, and audio equipment (e.g., wireless headphones, speakers, and car audio), typically over distances of around 10 meters in the most common mode. Bluetooth operates in the UHF radio spectrum in the ISM bands (about 2.402–2.48 GHz) and is managed by the Bluetooth Special Interest Group (SIG), which develops specifications and oversees qualification and trademark protection. The technology is designed for low-power operation, uses packet-based communication, and supports multiple device roles and connection structures (e.g., piconets and scatternets).
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