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Sennheiser unveils new Sports headphones – the MX686 Sports, CX 686 Sports, PMX 686 Sports and OCX 686 Sports - HardwareZone.com.sg
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Super Bass Sennheiser PMX 686G Sports Earbud Neckband Headset || Honest Review & Unboxing 2019 || - YouTube
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Sennheiser OCX 686 SPORTS - Sport Earbuds (with Microphone) - for running, jogging, workouts, gym, aerobic
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Amazon.com: Sennheiser PMX 680 Sports Earbud Headphones (Discontinued by Manufacturer) : Electronics
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