The AfterShokz Titanium open-ear headphones are on sale for an all-time-low $50 (Update: Sold out) - CNET
Beyond the Box Guam - The Aftershokz Trekz Titanium wireless stereo headphones brings something different to the usual sport headphones. It has bone conduction technology, an open ear design and a suite
Shokz OpenComm Bone Conduction Headphones - Black : A. T. Guys, Your Access Technology Experts
Best Buy: AfterShokz Titanium Wireless Bone Conduction Open-Ear Headphones Slate AS600SG