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I have never had them die yet and I regularly use them for 3-4 hours between putting them back in the charging case
Sorry, there was a problem. Please try again later.6 hours of battery life when fully charged, plus if your head piece run out of battery, just put it back into the box which contain another 18 hours of recharging without an outlet. Basically, the Head set box can recharged it 3x without a outlet = 3x 6 hours.
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