Lenovo K920 Smartphone - Příručka (Stránka 13)

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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.
Sound pressure warning statement
For the device that is tested in accordance with EN 60950-1:
2006+A11:2009:+A1:2010+A12:2011, it is mandatory to perform audio tests for
EN50332.
This device has been tested to comply with the Sound Pressure Level
requirement in the applicable EN 50332-1and/or EN 50332-2 standards.
Permanent hearing loss may occur if earphones or headphones are used at
high volume for prolonged periods of time.
Warning statement:
To prevent possible hearing damage, do not listen at high volume levels for
long periods.
Explosive atmospheres
Do not charge or use Lenovo Phone in any area with a potentially explosive
atmosphere, such as at a fueling area, or in areas where the air contains
chemicals or particles (such as grain, dust, or metal powders). Obey all signs
and instructions.