Filter
Top Products
Manual time adjustment (To set only the time)
7
The watch can be set to the precise current time of the currently set time zone.
(The time zone is not changed.)
Manual time adjustment
How to manually adjust the time
Continue to press Button B (3 sec),
and then release it when the second
hand moves to the 0-sec position.
1 2
When the second hand
points to “Y” or “N,”
reception is completed.
Direct the watch face
upward and wait
4
BPC
J
J
Y
BPC
J
J
Y
B
P
C
JJY
B
P
C
JJY
It takes up to 1 min to
complete reception.
3
How to set the sub-dial
8
・The sub-dial displays
the time in a 24-hour
system.
・Even when the time
zone of the dial is
changed, the time
of the sub-dial is not
changed.
Unlock the crown
Pull out the crown to
the rst click
Push the crown back in
Press Button B or Button C
to set the time
1
2 43
How to set the sub-dial
How to manually set the time
9
Unlock the crown
Pull out the crown to
the second click
Push the crown back (in
simultaneously with a
time signal)
Continue to press Button A (3
seconds)and then release it when the
hand moves to the 0-second position
Press Button B or
Button C to set the time
1
2
53 4
・
When using the watch again under a condition in which the watch is able to receive GPS signals, receive GPS signals to set the time.
・When adjusting the time, the date will be accordingly adjusted.
How to manually set the time
How to manually set the date
10
How to manually set the date
Precautions on the setting the date manually
Please refrain from doing this operation except where GPS signals cannot be received because this
watch can be set to the precise current time and calendar by automatically receiving GPS signals. It
may cause the preliminary position of this watch misaligned.
When the date is not auto-
matically changed under a
condition in which the watch is
unable to receive GPS signals
(when changing from months with
30 days or less to months with
31 days), set the date manually.
・
The date can be set independently
regardless of the time.
・
When using the watch again under
a condition in which the watch
is able to receive GPS signals,
receive GPS signals to set the
time and date.
→
5
How to adjust the time zone.
Unlock the crown
1
Push the crown back in
Pull out the crown to
the second click
Press Button B or Button C
to set the date
42 3
Instructions for Receiving Leap Second Data on Seiko Astron GPS Solar Watch
11
Thank you for purchasing a Seiko Astron Watch.
This watch enters the “leap second data” receiving mode after the rst GPS signal is received on or
after December 1st and June 1st.
It is conducted every six months whether the leap second data is put into eect or not. This process
occurs automatically so no special operation is required from the user. The process of receiving the
leap second data takes longer than the regular time adjustment. Be sure to complete receiving the leap
second data in an environment where a GPS signal can be received, such as outdoors.
For details, please read the Basic Manual (P.18).
About Leap Second
The leap second is to compensate for deviations from the “Universal Time”(UT) which is astronomically
determined and the “International Atomic Time”(TAI). 1 second may be added (deleted) once a year or
every few years at the end of June or December.
The watch will repeatedly enter the “leap second data” receiving mode until the process is successfully
completed. During this time, no time adjustment will take place. In the event that the attempt to receive
leap second data is unsuccessful, indicated by position N (not successful), it is recommended you move to
a place where a GPS signal can be easily received, such as outdoors, and complete the process of receiving
time data and then leap second data through a GPS signal by pressing and holding button B for 3 seconds.
The process of receiving leap second data
Although this movement is dierent from the normal time display, it is not an indication that the watch is defective.