Lumibrite
If your watch has Lumibrite
Lumibrite is a luminous paint that absorbs light energy of the sunlight and lighting apparatus 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, 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 you enter a dark place from a bright environment, your eye cannot adapt to the
change in light levels quickly. At first, you can hardly see anything, but as time passes, your vision
gradually improves. (Dark adaptation of the human eye)
* Lumibrite is a luminous paint that is completely harmless to human beings and the natural
environment; containing no noxious materials such as radioactive substance.
Reference data on the luminance
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
44
TO PRESERVE THE QUALITY OF YOUR WATCH
Troubleshooting
Troubles
Possible Causes
Solutions
The watch stops
operating.
The mainspring has not been wound.
Wind the mainspring or swing the watch
for a few times so that the watch will start
operating.
If this action does not correct the condition,
consult the retailer from whom the watch
was purchased.
The watch
temporarily loses/
gains time.
The watch has been left in extremely high
or low temperatures for a long time.
Normal accuracy will resume when the
watch returns to normal temperature.
The watch was brought into close contact
with a magnetic object.
Accuracy cannot be recovered. Restoring
the original accuracy requires
demagnetization (repair). Consult the
retailer from whom the watch was
purchased.
The watch was dropped, worn while
playing active sports, hit against hard
surfaces, or exposed to strong vibrations.
Accuracy cannot be recovered. Consult
the retailer from whom the watch was
purchased.
Inspection, adjustment, and overhaul
cleaning have not been performed for the
watch for more than 3 years.
Consult the retailer from whom the watch
was purchased.
The date changes
during daytime.
A.m./P.m. is not correctly set.
Advance the hour hand for 12 hours and
reset the time and date.
Blur in the display
persists.
Small amount of water has got inside the
watch due to deterioration of the gasket,
etc.
Consult the retailer from whom the watch
was purchased.
* For the solution of troubles other than above, contact the retailer from whom the watch was
purchased.
45
TO PRESERVE THE QUALITY OF YOUR WATCH
English
