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7. Power Cycle and Reset
7.1 Power Cycle
You can power cycle your PI4, simultaneously
hold the and Volume – buttons for 10
seconds until the indicator LED extinguishes, let go
when the indicator lights up again. Rebooting your
headphones will not reset their internal settings or
clear the paired device history.
7.2 Reset to Default
You can clear the paired device history and restore
all settings to their defaults. With the PI4 powered
on, simultaneously hold the , Volume - and
Noise Cancellation buttons for 10 seconds until the
indicator LED extinguish, let go when the indicator
lights up again, the headphones will be ready to pair
to a device.
Alternatively, you can also Reset from the Bowers &
Wilkins Headphones app, please see Reset under
Settings in the app.
8. Care & Maintenance
8.1 Storing Your PI4
Taking care of your PI4 will ensure they continue to
deliver the best performance and experience.
When not used, stow your headphones using
the included storage pouch, see Diagram 7. It is
recommended the headphones are first powered off:
1. With the headphones not worn, take the
neckband and form a single loop.
2. Bundle the loop and control units together in
one hand. With the free hand, clip the
earpieces together and loop the earbuds
over the bundle.
3. The opening of the pouch can be pinched
open, slide the headphones in, then ensure the
opening is closed and no parts of the
headphones are sticking out.
8.2 Cleaning Your PI4
Your PI4 can be cleaned by a soft, damp microfiber
cloth, gently wipe or dab clean. Removable pieces
such as ear tips and stabiliser fins should be taken
off and cleaned separately.
If you notice wax and residue accumulation on the
sound tubes, take a cotton swab or soft brush and
gently wipe away.
• Do NOT aggressively rub or use an abrasive
tool to clean.
• Do NOT use paper towels, napkins or tissue
as they will leave residue.
• Do NOT use cleaning detergents, soapy water,
polish or chemical cleaners.
• Do NOT wash or submerge all or parts of the
headphones in liquid.
9. Support
Should you require further help or advice regarding
your PI4 please visit the Headphones support site
here www.bowerswilkins.com/support.
Diagram 7
Storing your headphones