Harper HB-517, Instruction Manual, Page: 9 / 23

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Switching tracks
To switch to the next track in the playlist, double-
tap the touchpad on the right earpiece quickly.
To switch to the previous track in the playlist, tap
the touchpad on the right earpiece three times
quickly.
Volume control
Volume control during playback of audio files
is made by double-tap (volume up) and triple-
tap (volume down) of the touch panel of the left
earpiece.
Calling voice assistant
In standby mode, touch and hold the touchpad for
3 seconds. to call the voice assistant (the mobile
device and the software preinstalled on it must
support the voice assistant function).
Making phone calls using a headset.
Receive / end/reject incoming call
To receive an incoming call, tap the touchpad
once. To end a call, hold the touchpad for 2-3
seconds. To reject an incoming call, touch and
hold the touchpad for 2-3 seconds.