LG TONE Free Manuel D'utilisation page 12

Touch and hold the left or right earbud to switch between the ANC mode
and the LAS mode.
You can set the LAS and ANC functions in the LG TONE Free app.
You can configure the Listen to the Ambient Sound mode and Conversation
mode using the LG TONE Free app.
If you use the LAS or ANC function, the battery consumes faster, reducing
the time you can use the product.
You can use the LAS and ANC functions while being idle, listening to music,
or being on the phone.
*ANC is an acronym for Active Noise Cancellation.
*LAS is an acronym for Listen to the Ambient Sound.
CAUTION: When the LAS mode is enabled, you may hear the ambient
!
sound become loud suddenly. When using the ANC function outdoors,
pay attention to the surrounding environment for safety.
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