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(protocol, standard)
A specification for short-range radio links between mobile computers, mobile phones, digital cameras, and other portable devices.
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The standard wireless network technology for short-range transmission of digital audio and data from the Bluetooth Special Interest Group (SIG). The trademarked name and logo signify genuine Bluetooth technology (for more information, visit

Using radio waves, Bluetooth transmits through walls and other non-metal barriers. Although the term is synonymous with cellphone headsets and hands-free telephony in vehicles, Bluetooth is also used for wireless speakers, keyboards, mice, game controllers, smartwatches and more (for the different categories, see Bluetooth profiles). Constantly enhanced, see Bluetooth versions for version details.

Spread Spectrum Frequency Hopping
Bluetooth is a wireless personal area network (WPAN) that continuously changes its frequency. It randomly changes to one of 79 channels 1,600 times per second in the same unlicensed 2.4 GHz band as Wi-Fi. See spread spectrum.

Scandinavian Origins
Named after ancient King Harald Blatan of Denmark, Sweden-based Ericsson developed Bluetooth and co-founded the governing body in 1998 ( Bluetooth is also an IEEE personal area network (PAN) standard (see 802.15). Supporting point-to-point and multipoint architectures (see piconet), there are billions of Bluetooth devices in use. See Bluetooth glossary.

Bluetooth = Headset
Because they are were so ubiquitous, "Bluetooth" initially became synonymous with "headset." However, Bluetooth connects many other devices.

Game Controllers
This "gamepad" from Sony uses Bluetooth to communicate with the PlayStation3 game console. See video game controller. (Image courtesy of Sony Corporation.)

Blue Teeth!!
This Oral-B toothbrush sends elapsed time to the app in the user's smartphone via Bluetooth to monitor brushing time and history.

Bluetooth Logos
The stylized "B" displayed on a modern smartphone (left) or earlier cellphone (right) means that Bluetooth has been turned on in the device.
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References in periodicals archive ?
The SiW3500 helps speed time to market and implements new features found in Bluetooth specification Version 1.2.
Edlund said that the Bluetooth specification will receive a slight makeover at the Bluetooth World Congress 2003 in Amsterdam next month.
Both products are Bluetooth Specification Version 1.1 qualified and in full volume production.
The SiW1701 is Bluetooth Specification Version 1.1 qualified, features a 100 percent digital interface for easy integration and is in full volume production.
The Bluetooth specification was originally due to be announced at the end of June.
CSR's sixth generation of BlueCore silicon includes both full support for the latest version of the Bluetooth specification (v2.1+EDR) plus the company's AuriStream technology, which provides toll quality voice calls and is capable of a 40 percent reduction in power consumption in BlueCore6-ROM as compared with standard Bluetooth voice transmission methods, according to the company.
TELECOMWORLDWIRE-2 August 2007-CSR Bluetooth firmware qualified to Bluetooth specification v2.1(C)1994-2007 M2 COMMUNICATIONS LTD
Texas Instruments Incorporated (NYSE:TXN) (TI), Dallas, Texas, has announced that the company's fifth generation Bluetooth(R) solution has passed the qualification for Bluetooth specification v2.0 and enhanced data rate (EDR) by the Bluetooth SIG (Special Interest Group).
Finally, the 20-dB bandwidth measurement verifies that the 20-dB bandwidth of a modulated signal is less than 1 MHz, ensuring compliance to the Bluetooth specification.
The 'MicroStack Profiles' is an implementation of application profiles defined by the Bluetooth specification 1.1., working seamlessly with KC's MicroStack software and MicroPAX[TM] Baseband controller, 'MicroStack Profiles' takes full advantage of the benefits of this vertical integration to provide the best combination of code size and performance.