Lenovo K900 Smartphone User Manual

Page 5

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Important safety and handling information

Choking hazard

Keep Lenovo Phone and accessories away from small children. Lenovo
Phone contains small parts that can be a choking hazard to small
children. Additionally, the glass screen can break or crack if dropped on
or thrown against a hard surface.

Plastic bag notice

CAUTION 

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.

CAUTION 

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 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

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