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Sennheiser Adidas Sports Earbuds with Volume Control and Earfin Holding System (CX 680) - Newegg.com
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Sennheiser CX 680 Sports Review | PCMag
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Sennheiser Adidas Sports CX 680i 1/8 inch (3.5mm) iPhone compatible Connector In-Ear Earphone with Remote Headphones & Accessories - Newegg.com
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Sennheiser Adidas Sports Earbuds with Volume Control and Earfin Holding System (CX 680) - Newegg.com
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Sennheiser and Adidas launch Sports earphone range for active audiophiles
Sennheiser CX 680 Sports Review | PCMag
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Amazon.com: Sennheiser MX 680 Sports Earbud Headphone with Volume control & Earfin Clips (Discontinued by Manufacturer) : Electronics
