Bluetooth technology is a wireless communication standard, not only for wireless headsets, but for many other applications in the short to medium range (1 to 100 meters).

Stereo headsets and speakers.
Audio players and Portable Media Players (PMP).
Printers, scanners and multifunctional devices.
Keyboards, mice and videogame controllers.
Mobile phones, desktops, laptops and ultra-portables.

Virtually any electronic device, computer peripheral or [...]