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 Adidas CX 680 Sports, focused on music – Product Reviews Net
Review: Sennheiser /Adidas PMX 680 | WIRED
Review: Sennheiser /Adidas PMX 680 | WIRED
Sennheiser Adidas OMX 680i Sports Earphones With Microphone for sale online | eBay