Additional Safety Information - Lenovo E31-70 User Manual

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 your computer complies with EN 50332-2 Sub clause 7. This
specification limits the computer's maximum wide band true RMS output
voltage to 150 mV. To help protect against hearing loss, ensure that the
headphones or earphones 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 your Lenovo computer came with headphones or earphones in the package, as
a set, the combination of the headphones or earphones and the computer 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.

Additional safety information

DANGER
Plastic bags can be dangerous. Keep plastic bags away from babies and
children to avoid danger of suffocation.
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User Guide