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Lumibrite
If your watch has Lumibrite
Lumibrite is a luminous paint that absorbs the light energy of sunlight and lighting apparatuses in a short
time and stores it to emit light in the dark. For example, if exposed to a light of more than 500 lux for
approximately 10 minutes, Lumibrite can emit light for 3 to 5 hours. Please note, however, that, as Lumibrite
emits the light it stores, the luminance level of the light decreases gradually over time. The duration of the
emitted light may also differ slightly depending on such factors as the brightness of the place where the
watch is exposed to light and the distance from the light source to the watch.
* In general, when coming from a place that is bright to a place that is dark, it takes human eyes some time to adapt
to the darkness making it difficult to see objects initially. (Dark adaptation)
* Lumibrite is luminous paint that stores and emits light, which is harmless to human beings and the environment,
containing no toxic materials such as radioactive substances.
<Brightness levels>
Condition Illumination
Sunlight Fine weather 100,000 lux
Cloudy weather 10,000 lux
Indoor (Window-side during
daytime)
Fine weather More than 3,000 lux
Cloudy weather 1,000 to 3,000 lux
Rainy weather Less than 1,000 lux
Lighting apparatus (40-watt daylight
fluorescent light)
Distance to the watch: 1 m 1,000 lux
Distance to the watch: 3 m 500 lux (Average room luminance)
Distance to the watch: 4 m 250 lux
EN 37
2
TO PRESERVE THE QUALITY OF YOUR WATCH
Water resistant performance
Refer the table below for the description of water resistant performance of your watch before using.
(Please look at P.36.)
Indication on the
case back
Water resistant
performance Conditions of Use
No indication Non-water resistance Avoid drops of water or sweat
WATER
RESISTANT
Water resistance for
everyday life
The watch withstands
accidental contact with
water in everyday life.
b WARNING
Please do not use it for
swimming.
WATER
RESISTANT
5 BAR
Water resistance for
everyday life at 5-BAR
water resistant
The watch is suitable for sports such as swimming.
WATER
RESISTANT
1020BAR
Water resistance for
everyday life at 10 (20)-BAR
water resistant
The watch is suitable for diving not using an air cylinder.
EN 38
2
TO PRESERVE THE QUALITY OF YOUR WATCH
Magnetic resistant performance
Affected by nearby magnetism,
a watch may temporarily gain or lose time or stop operating.
b DANGER
Indication on the case back Condition of use
No indication
Keep the watch more than 5 cm away from magnetic products.
(JIS level-1 standard)
Keep the watch more than 1 cm away from magnetic products.
(JIS level-2 standard)
If the watch becomes magnetized and its accuracy deteriorates to an extent exceeding the specified rate
under normal use, the watch needs to be demagnetized. In this case, you will be charged for
demagnetization and accuracy readjustment even if it happens within the guarantee period.
The reason why a watch is affected by magnetism
The built-in balance spring may be influenced by a strong external magnetic field.
EN 39
2
TO PRESERVE THE QUALITY OF YOUR WATCH
Examples of common magnetic products that may affect watches
Smartphone, cellular phone, tablet terminal
(Speaker, magnet of cover)
AC adapter Bag
(With magnet
buckle)
AC-powered
shaver
Magnetic
cooking device
Portable radio
(Speaker)
Magnetic
necklace
Magnetic health
pillow
EN 40
2
TO PRESERVE THE QUALITY OF YOUR WATCH
11


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