Lenovo VIBE X II X2-AP Quick Start Manual page 12

Plastic bag notice
Plastic bags can be dangerous. Keep plastic bags away from babies and
children to avoid danger of suffocation.
Prevent hearing damage
Lenovo Phone has a headphone connector. Always use the headphone
connector for headphones (also called a headset) or earphones.
Excessive sound pressure from earphones and headphones can cause
hearing loss. Adjustment of the equalizer to maximum increases the
earphone and headphone output voltage and the sound pressure level.
Therefore, to protect your hearing, adjust the equalizer to an appropriate
level.
Excessive use of headphones or earphones for a long period of time at
high volume can be dangerous if the output of the headphone or
earphone connectors do not comply with specifications of EN 50332-2.
The headphone output connector of Lenovo Phone complies with EN
50332-2 Sub clause 7. This specification limits Lenovo Phone's
maximum wide band true RMS output voltage to 150 mV. To help
protect against hearing loss, ensure that the headphones or earphones
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you use also comply with EN 50332-2 (Clause 7 limits) for a wide band
characteristic voltage of 75 mV. Using headphones that do not comply
with EN 50332-2 can be dangerous due to excessive sound pressure
levels.
If Lenovo Phone came with headphones or earphones in the package,
as a set, the combination of the headphones or earphones and Lenovo
Phone already complies with the specifications of EN 50332-1. If
different headphones or earphones are used, ensure that they comply
with EN 50332-1 (Clause 6.5 Limitation Values). Using headphones that
do not comply with EN 50332-1 can be dangerous due to excessive
sound pressure levels.
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DANGER
CAUTION
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