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Amazon.com: Airfrex Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones : Electronics
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Amazon.com: ABLET Boom Microphone Cable - Boompro Gaming Mic Compatible with Sennheiser HD598, HD598 Cs, HD598 SE, HD518, SR, HD599 Headphone - Volume Control for Xbox One or PlayStation PS4 Controller, PC(150CM) :
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Headphones: Sennheiser HD 518 over-ears $70 (Reg. $130), Velodyne vFree wireless on-ears w/ mic $40 (Reg. $80+)
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