Oakley mounted the digital player's hardware on the frame's temples, including a sliding and pivoting feature to help adjust the speakers to the wearer's ears.

But slight head or neck movements often result in the speaker buds separating from the ear, diminishing the sound quality. Jogging or exercising only makes this worse. And if you can't drown out the unwanted music blaring from the gym speakers or the sound of traffic when working out outdoors, what's the point?