LG TONE Free FP8 UVnano True Wireless In-Ear Headphones (Charcoal Black) - Manual (Page 5)

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Replacement of a battery with an incorrect type that can defeat a safeguard
(for example, in the case of some lithium battery types).
Disposal of a battery into fire or a hot oven, or mechanically crushing or
cutting of a battery, may result in an explosion.
Leaving a battery in an extremely high temperature surrounding environment that
can result in an explosion or the leakage of flammable liquid or gas.
A battery subjected to extremely low air pressure may result in an explosion
or the leakage of flammable liquid or gas.
Do not carelessly throw away old batteries. It can cause an explosion or fire.
The disposal method may vary by country and region. Dispose of it in an
appropriate manner.
Precautions When Using the Product
If the product is exposed to excessive sweat, Clean the product with dry cloth.
Keep the earbuds clean.
HD Speaker
If the communication network of the device you are connecting to
supports HD Voice Calling, you can enjoy making voice calls and listening
to music in high definition.