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