Sennheiser OMX 680i Sports Review: Sennheiser and Adidas have collaborated to produce a quality pair of sports headphones - Headphones - Portable Headphones - Good Gear Guide
Sennheiser OMX 680 In-Ear Sports Earclip Headphone with Volume Control and Adjustable Earclips - GamerGates
Sennheiser PMX-680 Review
Best Buy: Sennheiser Adidas Sports Ear-Clip Headphones OMX-680i
Sennheiser Omx 680 Sports
Amazon.com: Sennheiser MX 680 Sports Earbud Headphone with Volume control & Earfin Clips (Discontinued by Manufacturer) : Electronics