HDR180 Digital Wireless Headphone System (RS170/180) User Manual RS170_US Sennheiser Electronic (NY)
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Geekria Comfort Velour Replacement Ear Pads for Sennheiser RS160, HDR160, RS170, HDR170, RS180, HDR180, Headphones Earpads, Headset Ear Cushion Repair Parts (Black): Amazon.co.uk: Electronics & Photo
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Sennheiser Black HDR 170 Around-Ear Wireless Stereo Surround Sound Headphone (Charger/Transmitter not included) - Newegg.com
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