Optional Aaa Battery Power Source - ISOtunes LINK 2.0 Manual

Optional AAA Battery Power Source

The headset can also be powered by three AAA Batteries (not included).
Three AAA Batteries hold a 24+ hour charge and will need to be replaced.
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Slide the Battery Cover Latch (9) "up" Remove the Lithium Battery Pack and
towards the headband to release the replace with 3 AAA Batteries. When using
Battery Cover. AAA batteries, please ensure you have
properly oriented the batteries.
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