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Amazon.com: Koss Porta Pro Utility On-Ear Headphones, Detachable Interchangeable Cord System, Collapsible Design, Stealth Grey : Electronics
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Amazon.com: Massdrop x Koss Porta Pro X On-Ear Headphones — Noise-Cancelling in-line Microphone, Activate Voice Assistant or Skip Tracks with in-line Remote, Collapsible for Maximum Portability (Midnight Blue) : Electronics
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