Bose QuietComfort 15 - Initial Setup and Usage; Before You Put On The Headphones; Noise Reduction Only Operation

Before you put on the headphones
1. Tilt the top of the right earcup inward to gain access
to the battery compartment.
2. Open the battery compartment and insert the
battery as shown.
3. Close the compartment.
2
AAA alkaline battery
(IEC LR03)
For noise reduction only
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Put on the headphones. On the right earcup, slide the
power switch forward to the On position. The battery
light indicator will illuminate.
You do not need to connect the headphones cord for
noise reduction only operation.