Amazon.com: Sennheiser PXC 550 Wireless – NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life : Electronics
Sennheiser PXC 550-II review: Great sound and ANC - SoundGuys
Sennheiser PXC 550-II - Headphones with mic - full size - Bluetooth - wireless - active noise canceling - Walmart.com