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Sennheiser OCX 686G Sports Ear-Canal Ear Hook Headset - Reviews | Headphone Reviews and Discussion - Head-Fi.org
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Sennheiser OCX 686I Sports and Fitness Headphones | Sennheiser headphones, Earbud headphones, Sennheiser
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Sennheiser OCX 686 SPORTS - Sport Earbuds (with Microphone) - for running, jogging, workouts, gym, aerobic
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