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• 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 hearing loss
There are irreversible risks of hearing loss if the receiver, the
earphones, the loudspeaker or the hands-free kit are used at a
high volume. Adjust the volume to a level that does not present
danger. Over time, you may accustomed to using a higher volume,
but this may cause damage to your hearing. If you hear buzzing
or muffled speech, stop using the devices and consult a specialist.
The higher the volume, the more quickly your hearing may be
damaged. Specialists give the following recommendations:
- Minimize high volume of headphones, the speaker or handset.
- Avoid increasing the volume to cover a noisy environment.
- Decrease the volume if you cannot hear people speaking near
you.
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