Checking The Battery Life Of The Headset - Sennheiser MB 660 Instruction Manual

Using the MB 660
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LEDs
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22 | MB 660

Checking the battery life of the headset

You can check the remaining battery life at any given time except when playing
music or making calls.
Tap and hold the touch pad for about 4 seconds.
X
You hear tones and the voice prompt stating the remaining battery life. The
LEDs flash/light up depending on the battery level.
Meaning
Battery is almost empty
(less than 2% charged)
Battery is about 2-20% charged
Battery is about 20-40% charged
Battery is about 40-60% charged
Battery is about 60-80% charged
Battery is more than 80% charged
You may also check the battery life of the headset in CapTune or directly
on the home screen of your smartphone.
Voice prompt
"Recharge headset"
"Less than 20% battery left"
"More than 20% battery left"
"More than 40% battery left"
"More than 60% battery left"
"More than 80% battery left"