Sennheiser OP - PX / MX 685 Sports Blue - Size L - - Ohrpolster Size L - PX 685 Sports, MX 685 Sports
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Sennheiser MX 686G - Sport Earbuds Headphones - Sweat and water resistant - for Smartphones & Mobile Phones
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Sennheiser MX 685 finding it's place in a crowded market | Headphone Reviews and Discussion - Head-Fi.org
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Sennheiser MX 680 Sports Earbud Headphone with Volume control & Earfin Clips (Discontinued by Manufacturer) : Electronics - Amazon.com
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