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第
8
页 共
18
页
Turning your
iBLU K-21
headset on and off
Turning on the headset
Press and hold the MFB for 2 seconds ,the LED will turn on in blue and hold about 2 seconds until
hear a long and a short deep, the LED will flash blue 5 times, that is to say the headset has been
turned on.
Turning off the headset
Press and hold the MFB for 4 seconds until you hear a long deep, the LED will turn red 2
seconds ,then the LED will stop flashing
。
Turning the built-in buzzer on and off
Turning on the built-in buzzer
Press and hold the next track key for 2 seconds until you hear a long beep.
Note the built-in buzzer is set to
“
on
”
.
Turning off the built-in buzzer
Press and hold the next track key for 2 seconds until you hear two short beep
。
Now
,
when there is an incoming call
,
the ringing tone will only be heard through one earphone
。