Amazon.com: Bowers & Wilkins PX Active Noise Cancelling Wireless Headphones Best-in-class Sound, Space Grey : Electronics
B&W PX headphones review: Music without distractions | Mashable
Looks like it may be possible to replace the battery in the new PX8 for future reference. At least going off the PX design… if you are brave enough 😆 : r/headphones
Bowers & Wilkins PX review: wireless noise-canceling nirvana - The Verge