strikingly different.
The Plantronics Discovery 975 model is pretty nifty. It's space age, it's tiny, and it's definitely a man's man's gadget:

The guy showing of this amazing piece of technology is ready to get business done. He's a professional.
The other headset reviewed, the Jawbone Prime by Aliph, is obviously for the ladies:

Just remember, it's what all the hottest dead clown women are wearing this season. (The site also features other dead clowns in a variety of color palettes to match their supercool headsets.)
As a coworker remarked:
Imagine the pitch for this: "We have a really cool new headset. How can we sell it? I know! Dead women painted like clowns! Brilliant!" And someone else said, "Yes!"