Sennheiser MX 680 Sports Earbud Headphone with Volume control & Earfin Clips (Discontinued by Manufacturer) : Electronics - Amazon.com
Sennheiser pairs with Adidas, releases new sport headphones - CNET
$34.99 for a Sennheiser Adidas CX 680i Sports Headset (Refurbished) ($79.95 List Price). Free Shipping and Returns. | Sennheiser, Headset, Adidas sport
Sennheiser X Adidas OMX 680i Sports Earclip Headphones with Mic and Remote 638267987460 | eBay
Sennheiser CX680 Canal Adidas inspired Sport Earphone - Newegg.com