“I see that this pair of headphones has a 3.5mm jack as a backstop. Will this jack work when the battery is dead?”

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• Yes, works with no issues with the unit powered off and connected via the cable. Sound is good, just don't have the noise cancellation features or the ability to control via the phone (anything that you can do via Bluetooth of course is unavailable).

  Answered by Kipp 8 years ago

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• Absolutely. Just plug them into any headphone output and they will work as you would expect.

  Answered by JBL Support 9 years ago

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