Samsung SBH500 Mode D'emploi page 14

When the battery charge gets low
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A warning sound beeps and the red indicator light flashes. If
you are on a call, switch the call from the headset to the phone
before the headset automatically turns off.
Putting on the headset
Place the headset on your ear. Be sure to put the correct (Left,
Right) earpiece on each ear.
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