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Amazon.com: PXC550 Cable, Replacement Stereo Audio Cable Extension Music Cord with Mic Microphone Remote Control Volume for Sennheiser PXC550 PXC480 PXC 550 480 MB660 MB 660 UC MS Headphones : Electronics
Micro USB charging cable for Sennheiser PXC 550 URBANITE XL WIRELESS MB 360 UC | eBay
USB Charging Cable Cord for Sennheiser PXC 550 In-ear Wireless Headphones Black | eBay