Seiko 7B24 - Lumibrite

■Lumibrite
IfyourwatchhasLumibrite
Lumibriteisaluminouspaintthatiscompletelyharmlesstohumanbeingsandnaturalenvironment,containingnonoxious
materialssuchasradioactivesubstance.
Lumibriteisanewly-developedluminouspaintthatabsorbsthe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,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di󱐯er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.
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ToPreservetheQualityofYourWatch
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
uorescent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