Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands ( 1 MHz each ; centered from 2402 to 2480 MHz ) in the range 2, 400 – 2, 483. 5 MHz ( allowing for guard bands ).

Originally Gaussian frequency-shift keying ( GFSK ) modulation was the only modulation scheme available ; subsequently, since the introduction of Bluetooth 2. 0 + EDR, π / 4-DQPSK and 8DPSK modulation may also be used between compatible devices.

Bluetooth uses the microwave radio frequency spectrum in the 2. 402 GHz to 2. 480 GHz range.

Maximum power output from a Bluetooth radio is 100 mW, 2. 5 mW, and 1 mW for Class 1, Class 2, and Class 3 devices respectively, which puts Class 1 at a lower level than mobile phones, and the other two classes much lower.

Like DECT, DECT ULE standard uses the 1. 9 GHz band so suffers less interference than Zigbee, Bluetooth or Wi-Fi, which all run on 2. 4 GHz.

Devices operating in the 2. 4 GHz range include microwave ovens, Bluetooth devices, baby monitors, cordless telephones and some amateur radio equipment.

Each model also received an enhanced trackpad with scrolling capabilities, a revised Bluetooth module supporting BT 2. 0 + EDR, and a new feature which parks the drive heads when sudden motion is detected by an internal sensor.

Using a phone that supports 3G and Bluetooth 2. 0, multiple Bluetooth-capable laptops can be connected to the Internet.

Bluetooth 1 modulates with Gaussian minimum-shift keying, a binary scheme, so either modulation choice in version 2 will yield a higher data-rate.

Hardware specs included 3. 7 " color TFT VGA display with 640x480 resolution, Intel XScaleTM PXA270 processor at 624 MHz, 336 MB of memory ( 256 MB flash, 64 MB SDRAM ), integrated 802. 11b and Bluetooth 1. 2, integrated Intel 2700G multimedia accelerator with 16 MB video memory.

2. 4 gigahertz Bluetooth connectivity is the most recent innovation in wireless interfacing for hearing instruments to audio sources such as TV streamers or Bluetooth enabled mobile phones.

In North America, is an ISM band used for unlicensed spectrum devices such as cordless phones, wireless headphones, and video senders, among other consumer electronics uses, including Bluetooth which operates between 2. 402 GHz and 2. 480 GHz.

* 802. 15x PANs ( e. g. Bluetooth, ZigBee ) 2. 4 GHz

* Specification of the Bluetooth System 2. 0 + EDR, Core System Package, Part B " Baseband Specification ", Section 9 " Audio ", November 2004

* Worldwide Type Approval Services for 315MHz ; 433MHz ; 2, 4GHz ; 24GHz ; 77GHz ; GSM ; UMTS ; LTE ; Wi-Fi devices ; Bluetooth devices ; Zigbee devices ; WiMAX devices ; RFID

The 900 MHz and 2. 4 GHz band are increasingly being used for a host of other devices, including baby monitor, microwave oven, Bluetooth, wireless LAN ; thus, it is likely that a cordless phone will suffer interference from signals broadcast by those devices.

In March 2011 Olivetti began producing the OliPad-its first ever tablet computer, featuring a ten-inch screen, 3G, WiFi, Bluetooth connectivity, Nvidia Tegra 2, Android 2. 2. 2, and a 1024 x 600 display.

Bluetooth detection uses similar techniques to other traffic measurement technology, and will be as accurate as these other systems.

" and then when connecting to another Bluetooth device it will provide this name and so the user will see it.

While the worm is considered harmless because it replicates but does not perform any other activity, it will result in shortened battery life on portable devices due to constant scanning for other Bluetooth enabled devices.

For the 2010 model year, in which U. S. News & World Report ranked it as the number one affordable large SUV, the Suburban will add a new premium interior package that includes tri-zone climate control and handy features like Bluetooth and rear audio controls.

In February 2010, Chevrolet unveiled a 75th anniversary edition of the Suburban, which will have the LTZ trim with white diamond tricoat exterior paint and cashmere interior, along with standard 20-inch chrome-clad wheels, revised roof rails, integrated navigation radio, XM Satellite Radio, Bluetooth phone connectivity, rearview camera, rear park assist, remote starting, adjustable pedals, and leather upholstery with heated / cooled front seats.

The trims will also get an updated modification, with the rear audio system, Bluetooth, floor console / storage area, wood grain interior, luggage rack rails, body-color exterior door handle / mirror caps and premium-cloth front bucket seats now standard on the 1LS trim, and chrome recovery hooks, two-speed transfer case, and 20-inch chrome wheels standard on its 1LZ 4WD models.

The device does support Bluetooth and will be completely digital meaning all media must be downloaded or transferred to the device which has 16 GB of internal flash memory.

It will likely start much higher than the sedan's base price of $ 10, 990, while it will also include Bluetooth, navigation system with 5-inch touch-screen display, satellite radio and an iPod / USB interface.

The secondary system will let the driver use the radio, GPS, Bluetooth, and air conditioning / heating.

WiMedia will transfer all current and future specifications, including work on future high speed and power optimized implementations, to the Bluetooth Special Interest Group ( SIG ), Wireless USB Promoter Group and the USB Implementers Forum.

A Bluetooth file transfer will fail if the user tries to extract the file using Bluetooth, yet the file will still appear as present, and will still be deletable via Bluetooth.

For example, some Nokia Symbian-based devices will completely refuse to send all files of certain types over Bluetooth.

The idea of this name was proposed by Jim Kardach who developed a system that would allow cell phones to communicate with computers ( at the time he was reading Frans Gunnar Bengtsson's historical novel The Long Ships about Vikings and king Harald Bluetooth ).

In October 2007, at the Luxemburgish Hack. lu Security Conference, Kevin Finistere and Thierry Zoller demonstrated and released a remote root shell via Bluetooth on Mac OS X v10. 3. 9 and v10. 4.

The award includes a cash prize of € 5, 000 and a Bluetooth Qualification Program voucher ( QDID ) valued at up to US $ 10, 000.

( list of Promoter members per Bluetooth SIG website at http :// www. bluetooth. com / English / SIG / Pages / default. aspx )

Harald Bluetooth, Gorm's son and Cnut's grandfather, was the Danish king at the time of the Christianization of Denmark.

The town was established by the Viking Slangir at the time of Harald Bluetooth.

A Bluetooth headset can talk to a mobile phone which is trunked on a microwave link, and at the other end someone is on a cordless phone.

Historians have always suggested that Gorm was buried first in Queen Thyra's grave mound at Jelling, and later moved by his son, Harald Bluetooth, into the original wooden church in Jelling.

Harold Bluetooth died at Jomsborg in 985 / 86.

In the 970s, Haakon Sigurdsson, Jarl of Lade, became the most powerful man in Norway, at first supported by Harald Bluetooth of Denmark and paying tribute to him — though the two later fell out over religious matters.

This allows several Bluetooth Piconets to operate in the same area at the same time with minimal interference.

A group of researchers at the Swiss Federal Institute of Technology ( ETH Zurich ) have developed a dating application called Bluedating running on mobile phones with Bluetooth.

It features a 16-bit TFT color screen with a resolution of 128 × 128 pixels, a VGA camera that can record video clips in H. 263 ( SubQCIF ) format at 128 × 96 pixels at 15 FPS, built-in Bluetooth wireless technology, FM radio ( when a wired headset is attached to the Pop-Port interface to act as an antenna ), and playback of 3GP video / audio at up to 30 FPS and MP3, AAC and AMR audio.

Furthermore, a new status bar always appears at the bottom of screen, giving quick access to the time, system information, home, find, menu access, alerts, Bluetooth, full-screen writing, screen rotation, and what is shown in the input area.

In the US prices start at, higher spec models include Bluetooth, navigation system with 5-inch touch-screen display, Satellite Radio and an iPod ®/ USB interface.

Electromagnetic interference at 2. 4 GHz can be caused by 802. 11b and 802. 11g wireless devices, Bluetooth devices, baby monitors and cordless telephones, video senders, and microwave ovens.

Through the use of Bluetooth, it is now possible at particular locations in the nature reserve for visitors to download pictures of flowers and birds, and also examples of birdsong, onto their mobile phones.

Despite its diminute size ( 3. 94 × 1. 89 × 0. 79 in or 100 × 48 × 20 mm, 2. 96 oz or 84 g ), it was one of the most feature-rich mobile phones at the time, with Bluetooth, IrDA port, GPRS 3 + 1, tri-band compatibility ( 900 MHz, 1800 MHz and 1900 MHz ), SMS with T9 ( predictive text ), EMS, WAP, and customizable monophonic ring tones.

After the release of this vulnerability vendors of mobile phone patched their Bluetooth implementations and, at the time of writing, no current phone models are vulnerable to this attack.