Bluetooth is a wireless technology that enables mobile phones, computers and personal digital assistants (PDAs) to connect with each other using short-range radio waves. It's a bit like opening your car door with an electronic key by infrared, except at a more advanced level.
What are the main benefits?
The main benefit from using a Bluetooth device is the simple fact that it does away with jumbles of wire and adaptors that may encumber the users.
How does Bluetooth work?
A low-cost transceiver chip is included in each device and transmits and receives in a previously unused frequency band which exists globally. In addition to data, up to three voice channels are available. The maximum range is 10 metres.