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Perpetual Calendar; Time And Calendar Setting - Seiko 7d46A Technical Manual

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the time relay function of the watch remains operable for approximately four years.
(Caution)
If the stored electrical energy is completely depleted while the watch is in the
power save mode, swinging the watch may not activate the time relay function.
Instead, the second hand starts moving at two-second intervals.
4.

PERPETUAL CALENDAR

●The perpetual calendar automatically adjusts the date up to February 28, 2100. Even if
the watch is in the power save mode, the calendar continues to function as normal.
(Caution)
The date changes between 23:30 and 0:30.
Normally it takes approximately 2 seconds for the watch to change the date.
However it may take up to 2 minutes especially during the wintertime or when the
stored electrical energy is being depleted.
Even though the watch is reactivated after the stored electrical energy has become
extremely low, the calendar can be easily adjusted manually.
When the watch is in power save mode, and the date does not change correctly (or
shows the wrong date), the electrical power stored in the rechargeable battery is
being depleted. Before starting to wear the watch, recharge the watch until the
second hand no longer moves at two-second intervals and then reset the time and
calendar.
5.

TIME AND CALENDAR SETTING

● It is recommended that you adjust the time and/or calendar during the time between
1:00 and 23:00.
● If you adjust the time and/or calendar around 0:00, the date may become incorrect,
but this is not a malfunction.
● When the watch moves at two-second intervals, the date stops changing.
● When the watch no longer moves at two-second intervals after it is recharged, reset
the calendar.
● When the date is set to a non-existing date, such as February 30, the calendar
automatically correct the date. (When the date is set to February 30, the calendar
automatically shows March 1).
● When the stored electrical energy is completely depleted, and the watch is stopped,
recharge the watch until it no longer moves at 2-second intervals and reset the time
and calendar.
3

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