Bluetooth headset roundup

From Australian company BlueAnt, the Z9 uses an audio algorithm to distinguish voice signals from everything else to cancel out external noise.

Jawbone's solution to noise cancellation is to increase mic volume when you're speaking, and lower it when you're not.

The Plantronics Voyager 855 does not have noise cancellation, but two connected earpieces for stereo listening. So it handles both phone and Bluetooth-enabled media player.