Bose QuietComfort Wireless Over-Ear Active Noise Canceling Headphones (White Smoke) - Manual (Page 29)

WHAT’S IN THE BOX
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HEADPHONE STATUS
CHARGING STATUS
Shows the charging status.
LIGHT ACTIVITY SYSTEM STATE
Blinks white 2 times Charging begins
Solid amber Charging
Solid white Full charge
UPDATE AND ERROR STATUS
Shows the update or error status.
LIGHT ACTIVITY SYSTEM STATE
Fast blinking white (10 seconds) Updating software (via USB)
Slow blinking white (30 to 60 seconds) Updating software (wirelessly)
Blinking amber and white Error - contact Bose customer service