Amazon.com: Sennheiser PXC 550 Wireless – NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life : Electronics
New 700mah Li-ploymer Ahb413645pct Replacement Battery For Sennheiser Pxc 550 Accumulator Batterie 3-wire Plug +tools - Mobile Phone Batteries - AliExpress
PXC550 won't hold >20% charge and runs out quickly. Cracked the case to check buttons and found an extra 'music' button. Anyone else had this issue? : r/sennheiser
Best aptX Bluetooth headphones of 2022 - SoundGuys