SENNHEISER PXC 550-II noise Canceling Headphones Wireless, AptX-LL, Ap Working | eBay
Amazon.com: Geekria QuickFit Audio Cable with Mic Compatible with Sennheiser Momentum 4, PXC 550, PXC 550 II Cable, 2.5mm Aux Replacement Stereo Cord with Inline Microphone and Volume Control (4 ft / 1.2 m) : Electronics
Sennheiser PXC 550 Wireless Bluetooth Headphones with Noise Cancellati – JG Superstore
Replacement EarPads For Sennheiser PXC 550 550-II MB 660 PXC 480 Series Headsets | eBay