Sennheiser PXC 550 Wireless Bluetooth NC Headphones $110 down to $290 shipped at Amazon
Sennheiser PXC 550 review | 51 facts and highlights
Sennheiser PXC 550 Wireless Headphone Bluetooth/NFC Black
Amazon.com: SENNHEISER PXC 550-II Wireless NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life, Black : Electronics
Best Buy: Sennheiser PXC 550 Wireless Over-the-Ear Noise Cancelling Headphones Black PXC 550
Sennheiser PXC 550 Wireless review: A full-size Bluetooth headphone with active noise canceling that rivals Bose QC35 - CNET