Bose QuietComfort Ultra Wireless Noise Cancelling Headphones with Spatial Audio, Over-the-Ear Headphones with Mic, Up to 24 Hours of Battery Life, White Smoke: Amazon.co.uk
vhbw Battery Replacement for Bose AHB110520CPS for Wireless Headset Headphones (400mAh, 3.7 V, Li-polymer)