Amazon.com: Linkidea Headphones Carrying Case Compatible with Sennheiser PXC 550, PXC 550 II Wireless, PXC 480 Case, Protective Hard Shell Travel Bag with Cable, Charger Storage (Black) : Electronics
SENNHEISER PXC 550-II Wireless NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life, Black
Bose QuietComfort 35 II vs Sennheiser PXC 550-II - SoundGuys