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second must then be added or subtracted as a correction factor. This is known as a
“leap second”.
The leap second correction is executed every year or two simultaneously throughout
the world on the basis of information collected by astronomical observatories all over
the world. The correction is effected between 11:59'59" p.m. and 0:00'00" a.m. GMT
either on December 31 or on June 30, during which one second is added or subtracted.
When this happens, please adjust your watch accordingly.
Please refer to your newspaper for information on the leap second.
BATTERY CHANGE
The miniature battery which powers your watch should last
approximately 5 years (Cal. 4F32) / 10 years (Cal. 8F32 and 8F33).
However, because the battery is inserted at the factory to check the
function and performance of the watch, its actual life once in your
possession may be less than the specified period. When the battery
expires, be sure to replace it as soon as possible to prevent any mal-
function. For battery replacement, we recommend that you contact an
AUTHORIZED SEIKO DEALER and request SEIKO CR1612 (Cal. 4F32)
/ SEIKO CR2412 (Cal. 8F32 and 8F33) battery.
* If the calendar checking function is used frequently, the battery life may be less
than the specified period.
5
Years
[Cal. 8F32, 8F33]
10
Years
[Cal. 4F32]