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Use accessories authorized by manufacturers. Using unauthorized accessories
will render the warranty null and void.
Keep the ambient temperature between 0℃ and 40℃ while the device is being
charged. Keep the ambient temperature between 0℃ to 40℃ for using the
device powered by battery.
Preventing Hearing Damage
Using the receiver, earbuds, headphones, speakerphone, or earpieces at high
volume can result in permanent hearing loss. Be extremely careful when listening
at high decibel levels. Set the volume to a safe level. If you experience strange
sounds in your ears like ringing or if you hear muffled speech, get your hearing
checked. If you continue to use high volume, your hearing would soon gets
affected.
Hearing experts offer the following suggestions to protect your hearing:
Reduce the time you use the receiver, earbuds, headphones, speakerphone, or
earpieces at high volume.
Do not increase the volume to block noisy surroundings.
Reduce the volume if you cannot
hear people speaking near you.
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