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BlueTooth Definition

BlueTooth is a specification for the use of low-power radio communications to wirelessly link phones, computers and other network devices over short distances. The name "Bluetooth" is borrowed from Harald Bluetooth, a king in Denmark more than 1,000 years ago.

Bluetooth technology was designed primarily to support simple wireless networking of personal consumer devices and peripherals, including cell phones, PDAs, and wireless headsets. Wireless signals transmitted with Bluetooth cover short distances, typically up to 30 feet (10 meters). Bluetooth devices generally communicate at less than 1 Mbps.

Bluetooth Profiles

A Bluetooth profile is a wireless interface specification for Bluetooth-based communication between devices. In order to use Bluetooth technology, a device must be compatible with the subset of Bluetooth profiles necessary to use the desired services. A Bluetooth profile resides on top of the Bluetooth Core Specification and (optionally) additional protocols. While the profile may use certain features of the core specification, specific versions of profiles are rarely tied to specific versions of the core specification. For example, there are HFP 1.5 implementations using both Bluetooth 2.0 and Bluetooth 1.2 core specifications.

The way a device uses Bluetooth technology depends on its profile capabilities. The profiles provide standards which manufacturers follow to allow devices to use Bluetooth in the intended manner.

Bluetooth Compliant versions

Bluetooth version 1.2 compliant means it is easier to use, a quicker connection, and interference is reduced! Bluetooth versions are backward compatible, so no worries as you upgrade to a higher Bluetooth compliant versions.

Bluetooth version 2.0 + EDR (Enhanced Data Rate) is becoming increasingly popular for battery life improvement of nearly 20% if BOTH devices have Bluetooth version 2.0.

Bluetooth Class defines Range

Bluetooth Class 3 radios use just 1 mW of power, with a range less than 2 feet.

Bluetooth Class 2 radios, typical in cell phones, have a range of up to 10 meters or 30 feet if unobstructed.

Bluetooth Class 1 radios, typical of Newer Bluetooth dongles and headsets, have a range of up to 80-100 meters, that's up to 328 feet if unobstructed!