Bose QuietComfort Ultra Wireless Noise Canceling Over-Ear Headphones (White Smoke) - Manual (Page 15)

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HEADPHONE CONTROLS
POWER OFF
Press and hold the Bluetooth /Power button until you hear a tone and the status light
blinks white twice.
NOTE: When the headphones are powered off, noise cancellation is disabled.
Auto-off
The headphones conserve the battery and go to sleep when you remove them from
your head and they aren’t in use for 10 minutes. To wake the headphones, place
them on your head or press the Bluetooth /Power button.
The headphones power off after 24 hours of inactivity. To power on the headphones,
press the Bluetooth /Power button.
NOTE: To change the auto-off setting, use the Bose Music app. You can access this
option from the Settings menu.