24
Caliber
number
Battery
(SB-)
Battery life
9F83
AN
Approximately
3 years
9F82
9F62
9F61
4J52
AG
4J51
AC
8J55
AN
Approximately
5 years
○
The battery life is the estimated life for a
watch with a new battery installed. The
battery in your watch at the time of purchase
was inserted in the watch at the factory for
performance checks. It may run down earlier
than the above-specified period.
○
When the battery nears its end, the second
hand moves at two-second intervals
instead of normal one-second intervals. The
watch remains accurate while the second
hand is moving at two-second intervals.
Frequency of
crystal oscillator
32,768 Hz (Hz = Hertz...Cycles per second)
Loss/gain
(Annual rate)
±10 seconds when used on the wrist within a normal
temperature range (between 5 ºC and 35 ºC) for
approximately 8 hours per day.
＊
Monthly rate of loss/gain may amount to approximately
2 seconds depending on the condition of use.
Operational temperature
range
Between –10 ºC and +60 ºC
Driving system
Step motor
IC (Integrated Circuit)
C-MOS-IC: 1 piece
※
The specifications are subject to change without prior notice due to product
improvement.
■
SPECIFICATIONS • BATTERY
(MOVEMENT)
■
INTERCALARY SECOND (LEAP SECOND)
Normally there are 86,400 seconds in a day. Due to a slight change in the
earth's rotation, an extra second may be added to one day during the year.
This is called the intercalary second. Every year the decision is made whether
such an adjustment is needed. When the adjustment takes place, the standard
time should be corrected by delaying the standard time one second. To keep
your SEIKO watch accurate with the world standard time, adjust your watch to
a time signal whenever such adjustment is made. According to the information
from the observatories all over the world, the standard time is delayed one
second simultaneously throughout the world by the Greenwich Royal
Observatory. In the Greenwich Mean Time, an extra second will be added to
the one minute between 11:59 p.m. and 0:00 a.m. either on December 31st
or on June 30th. However, the adjustment may not be made in some years.
Please check by a newspaper, etc. whether such an adjustment will be made
or not.