Samsung HM1800 - Manual (Page 13)

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Turning the headset on or off
To turn the headset on
Slide up the power switch. The blue indicator light flashes 4 times.
Turning the headset on for the first time, it will automatically enter pairing
mode for approx 3 minutes. For more information, see page 12.
To turn the headset off
Slide down the power switch. The indicator light flashes blue and red then turns off.
Using voice prompts
Voice prompts will inform you about the current status of the headset and usage
instructions. Voice prompts are available in English only. If you can’t hear any voice
prompts, make sure the voice prompt feature is turned on.
Turning the voice prompt on or off
In Pairing mode, press and hold both volume buttons simultaneously for 3 seconds to
turn the Voice prompts on or off. To enter Pairing mode, see page 12.