Bluetooth headset
Bluetooth technology has been around since 1999. It enables wireless communication between a sender and receiver (for instance, a mobile phone and a headset, or a mobile phone and a car stereo). The technology is a joint venture between Ericsson, IBM, Toshiba, Nokia and Intel. The name came from Harald Bluetooth, a Danish Viking king who united Denmark and Norway and was a good speaker. The project group took the name as they worked across countries and in harmony. (From the catalogue 2004.)