Pushing down on the wide end of the headset activates the single button on the Stone, which you use for making or taking calls and for pairing the unit with a cell phone. Since the Stone's molded earhook is part of the device, the unit is designed to fit only on the right ear. Though the earhook is flexible, it is still somewhat rigid and may not fit tightly onto your ear, as was the case for me. A colleague, in contrast, noted that the earhook stayed put on her ear, and felt quite comfortable. The quarter-ounce headset comes with extra earbuds for a better fit if necessary.

The Stone, which has two microphones, uses Jabra's Noise Blackout Extreme technology to enhance your voice while blocking out other noises. The unit also has the company's Audio Shock Technology, which arrests sudden spikes in volume. In my tests, callers had no problem hearing me even when I was in a noisy household with televisions and radios running in the background.

It's hard to fault the Jabra Stone on style--it certainly looks good inside or outside its "stone" base. But this Bluetooth headset will certainly feel and sound better if you can get it to fit well on your ear.