Wipe the terminals of the product or the battery, if it became dirty,
with a clean and dry rag.
It is necessary to charge the battery before its use. Always use the
charger and read the manufacturer instructions or the manual of the
device for the instructions regarding charging.
Do not leave a battery charged when it’s not going to be used.
After long periods of storage, it may be necessary to charge and
discharge the battery several times in order to achieve maximum
performance.
Always keep the original documentation of the device, you might need
it later for future reference.
If it’s possible, take out the battery of the device when it’s not used.
Do not store your device in extremely hot or cold places like inside of
a car during the summer. It might damage the device and cause
explosion of the battery. It’s recommended to use the device in a
range of temperatures between 5°C and 35°C.
Prevention of the hearing loss
There are irreversible hearing loss risks if the receiver, the ear buds, the
speaker or the headset are used at high volume. Regulate the volume to
a level that does not present a danger. Over time, you can be used to a
higher volume that will seem normal, but is harmful to your hearing. If
you are experiencing buzzing or muffled speech, we suggest that you
consult a hearing specialist. Higher the volume, higher the risk that your
hearing may be damaged quickly. Hearing specialists suggest the
following recommendations:
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