SF Series
15
English
4.2 Powering On and Off
To power on the headset, press the Center Button and the (+) Button
at the same time for 1 second while hearing ascending beeps and a
voice prompt, “Hello”. To power off the headset, tap the Center Button
and the (+) Button at the same time while hearing descending beeps
and a voice prompt, “Goodbye”.
4.3 Charging
You can charge the headset by connecting the supplied USB power &
data cable into a computer’s USB port or USB wall charger. You can
use any standard micro USB cable to charge the unit. The charging
LED turns red while charging and turns blue when fully charged. It
takes about 1.5 hours to be completely charged.
or
ACAdapter
4.4 Checking the Battery Level
4.4.1 LED Indicator
When the headset is powering on, the red LED ashes rapidly
indicating the battery level.
4 ashes = High, 70 ~ 100%
3 ashes = Medium, 30 ~ 70%
2 ashes = Low, 0 ~ 30%
4.4.2 Voice Prompt Indicator
When you power on the headset, keep pressing the Center Button and
the (+) Button simultaneously for about 5 seconds. Then you will hear
a voice prompt indicating the battery level. However, if you release the
buttons as soon as the headset turns on, you will not hear a voice
prompt for the battery level indication.
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