“Once it is out of battery, can it be plugged to a cable to use it wired? This would be very helpful when using in an airplane.”

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• Once they are out of battery the only option is to recharge them. They can't be used wired.

  Answered by CommunityAnswer 8 years ago

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• Unfortunately they cannot be used while plugged in to a power source.

  Answered by xantic 8 years ago

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