Casio 3179, Руководство пользователя, Страница: 41 / 59

E-39
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The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
Illumination Precautions
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The electro-luminescent panel that provides illumination loses power after very long
use.
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Illumination may be hard to see when viewed under direct sunlight.
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The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
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Illumination turns off automatically whenever an alarm sounds.
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Frequent use of illumination runs down the battery.