The list author says: "These are the best reviewed bluetooth headsets around!
Bluetooth is an easy to implement (inexpensive to implement, truth be told), technology in which 2 or more devices two devices communicate with each other over low-frequency radio waves in the 2.4GHz range, wirelessly.
Not only can U be safe while driving (or boarding, or skiing, or whatver UR doing that requires hands-free operation), but U can be cool doing it!
"This comfortable headset may have the best sound quality around! The wind noise reduction is great, especially if U live where "the hawk" is out (meaning "wind" if U ain't hip to the Professa's lingo)."