Bluetooth is a wireless technology for exchanging data between devices over short distances. It operates on a 2.4 GHz frequency and allows for simple, seamless communication without the need for cables.
The Bluetooth icon combines two Nordic runes similar to the Latin letters H (Haglaz) and B (Berkanan). The accompanying Bluetooth logo was created using a font similar to Steve Jackaman's Gothic Medium Condensed. This font is a commercial product and more information can be found about here.