Batteries - ISOtunes SPORT Manual Del Usuario

Batteries

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