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3
ENGLISH
1. PI4 Carton Contents
PI4 headphones
Storage case
USB-C charging cable
Ear tips (small, medium and large)
Ear stabilisers (small, medium and large)
Document pack
2. Getting to know your PI4
2.1 Switching Headphones On and Off
Diagram 1 illustrates Power button functionality.
Switching On
The Power button is located on the left control unit.
Press and hold the Power button for 2 seconds. An
audible cue will be presented and the LED indicator
will light up in ether green, amber or red displaying
the current charge level.
Switching Off
Press and hold the Power button for 2 seconds.
An audible cue will be presented and the
headphones will power down when the LED
indictor is no longer lit.
2.2 Headphone Controls
Diagram 2 illustrates the headphone controls. The
following buttons on the right control unit are used to
for media playback:
Function
Action
Play or pause
Press the Multi-function button
once.
Play to next track
Press the Multi-function button
twice in quick succession.
Note: functionality dependent
on source device.
Play previous track
Press the Multi-function
button three times in quick
succession.
Note: functionality
dependent on source device.
Increase Volume
Press the button.
Lower Volume
Press the Volume - button.
The following buttons on the right control unit are
used for phone call functionality:
Function
Action
Answer or end call
Press the Multi-function
button once.
Answer an
incoming call
When incoming call occurs,
press the Multi-function button
once.
Decline an
incoming call
When incoming call occurs,
hold the Multi-function for
2 seconds.
Switch between
two calls
With two calls active, press the
Multi-function button twice.
Merge two calls
With two calls active, hold
the Multi-function button for
1 second.
Toggle mute
While on a call, press the Multi-
function button three times.
2.3 Status Indicator
The status LED indicator is located on the
right control unit, Diagram 3 explains the
illumination states.
Diagram 1
Power button functionality
Diagram 3
Status indicator illuminations
Diagram 2
Headphone controls
Illumination
Operational state
White
Battery charge > 30%
Amber
Battery charge between 30% and 10%
Red
Battery charge < 10%
Red flashing
Battery charge insufficient for headphone operation
Blue flashing
Pairing mode enabled
Blue (2 sec solid)
Pairing successful
Blue flashing (calls)
Incoming call
Green flashing
Rapid charging
Green solid
Battery charge full, trickle charging
Volume -
Power
Noise cancelling
Multi-function
L
R
L