Please carefully read the instructions in this Complete User
Guide before using the watch.
Length adjustment service for metallic bands is available at the retailer from whom the watch
was purchased. If you cannot have your watch repaired by the retailer from whom the watch
was purchased because you received the watch as a gift, or you moved to a distant place,
please contact SEIKO WORLDWIDE SERVICE NETWORK. The service may also be available on
a chargeable basis at other retailers, however, some retailers may not perform the service.
If your watch has a protective film for preventing scratches, make sure to peel it off before
using the watch. If the watch is used with the film on it, dirt, sweat, dust, or moisture may be
attached under the film and may cause corrosion.
1 Features ............................................................................................ 4
2 Names of the parts ......................................................................... 7
3 Check the charging status .............................................................. 8
4 Time zone ...................................................................................... 10
5 Time zone display and list of time zones around the world ..... 11
6 Time Zone Adjustment ................................................................. 13
7 Manual time zone selection ......................................................... 16
11 Leap second (Automatic leap second reception function) ........ 25
12 Reception result display ............................................................... 27
13 How to check when the time zone information was
configured for your watch ............................................................ 29
32
Features
1
This is a GPS solar watch.
GPS signal reception
This watch can be set to the precise local time anywhere in the world by
pushing just one button.
DST (Daylight Saving Time) can be set manually.
This watch quickly adjusts the time by receiving GPS signals from GPS
satellites.
This watch responds to a total of 40 time zones around the world.
When the region or time zone where the watch is used is changed, please
carry out operation of “time zone adjustment.”
Solar charging function
This watch operates by solar charging.
Expose the dial to light to charge the watch. Once fully charged, the watch
runs for approximately 6 months.
When the energy stored in the watch runs out completely, it takes time
to fully charge the watch, so please keep in mind to charge the watch
regularly.
Automatic time adjustment function
This watch automatically adjusts the time in accordance with
action patterns during use.
When the watch has sensed sufficient brightness under an open
sky, it automatically receives GPS signals from GPS satellites.
This function enables the watch to automatically adjust the time
precisely even while you are using the watch.
This watch is unable to receive GPS signals when the energy stored in
the watch is low.
54
Standard Charging Time
GPS signal reception consumes a lot of energy. It is necessary to charge the watch by exposing
it to light so that the indicator hand points to the “middle” or “full” position. (If the charging
status is displayed as “low,” the reception will not start even with manual GPS signal reception.)
The figures of “Time required for charging the watch to start moving at one- second intervals”
are estimations of time required to charge the stopped watch by exposing it to light until it
moves at steady one-second intervals. Even if the watch is partially charged for a shorter period,
the watch will resume one-second- interval movement. However, it may shortly return to twosecond-interval movement. Use the charging time in this column as a rough guide for sufficient
charging time.
The required charging time slightly varies depending on the design and the dial color of the watch.
Light
source
Fluorescent light
Sunlight
Condition
(Example)
Cloudy day
30W 5cm
Sunny day (Under
the direct sunlight
on a summer day)
is stopped (not charged)
To fully
charged
115 hours4 hours15 minutes
50 hours1.5 hours10 minutes
To one-second
interval movement
--
is secured
In the state where
the hand moves (the
watch is charged)
To move for one day
3.5 hours
Names of the parts
2
Hour hand
Second hand
Indicator hand
Minute hand
Button A
Crown
Date
Button B
Position of each display may differ depending on the model (design).
76
Check the charging status
3
The indicator hand position shows whether this watch is able or unable to receive GPS signals.
In addition, if the charging status is low, the position of the second hand shows the energy
depletion status in further detail.
Reception
is allowed
Indicator display Charging statusSolution
Reception is
full
allowed.
middle
Reception is
allowed.
Reception
is not
allowed
GPS signal reception requires a lot of energy. It is necessary to regularly charge the watch by exposing
it to light.
Indicator
display
Movement of second
hand
1-second
interval
movement
2-second
interval
movement
5-second
interval
movement
Charging statusSolution
The watch is unable
to receive GPS
signals, but has
energy to operate.
The watch is unable
to receive GPS
low
signals, and does
not have energy
to operate. (The
energy depletion
forewarning
function is
activated.)
The charging status is
not displayed for in-flight
mode (
).
Charge the watch at
least until the indicator
hand points to “middle”
so that the watch is able
to receive GPS signals.
Continue to charge the
watch at least until the
indicator hand points
to “middle” so that
the watch is able to
continuously operate
and receive GPS signals.
Change from in-flight to
normal mode.
When the indicator hand
points to “low,” charge
the watch.
98
Time zone
4
Time zone
Based on Coordinated Universal Time (UTC), the standard time commonly used is adopted by
countries and regions around the world. The standard time is determined by each country or
region, and the region where the same standard time is adopted is referred to as the time zone,
and presently, the time zone is divided into 40 zones as of March 2015.
DST (Daylight Saving Time)
Depending on the area, DST (Daylight Saving Time) is individually set.
Daylight Saving Time, or summer time, is a system to lengthen daylight time by advancing 1
hour when daylight time is longer during summer. Daylight saving time has been adopted in
about 80 countries, mainly in Europe and North America. The adoption and duration of daylight
saving time varies depending on the country.
Daylight Saving Time is subject to change due to circumstances of the country or region.
Coordinated Universal Time (UTC)
UTC is the universal standard time coordinated through an international agreement. UTC is the
primary time standard for recording time around the world. The time obtained by adding a leap
second to the “International Atomic Time (TAI)” is determined based on the atomic clock around
the world. It is coordinated in order to compensate for deviations from universal time (UT)
which is astronomically determined by the UTC.
Time zone display and list of time zones around
5
the world
The following list shows the relationship between displays of the bezel and dial ring and time
difference from the UTC.
Please refer to the second hand positions below to set the time zone or to check the time zone
setting.
DST (Daylight Saving Time) is used in time zones with a mark.
In the Lord Howe Island time zone in Australia with a
minutes while Daylight Saving Time (Summer Time) is in effect.
This watch corresponds to DST in the Lord Howe Island time zone.
The time zone of each region and DST (Daylight Saving Time) are as of March 2015.
Display of time zone
Representative city names…28 cities among the total of 40 time zones
around the world
Time difference…+14 hours ~ –12 hours
Display of time difference
The displays of city code and the time difference from UTC are subject to
change depending on model.
“·” between figures of the display of time difference shows that there is a
Anchorage
Los Angeles
Denver
Chicago
New York
St. John’s
Rio de Janeiro
Fernando de
Noronha
Azores
UTC
± hours
+12
+12.75
–3.5
Time Zone Adjustment
6
Time zone adjustment
The time zone can be adjusted to the local time anywhere in the world with just one
button operation.
DST (Daylight Saving Time) can be set manually.
How to adjust the time zone
Go to a place
where GPS signals
1
–9
–8
–7
–6
–5
–3
–2
–1
can be easily
received
Move to the
outdoors under an
open sky with good
visibility.
Continue to press Button A (6 seconds), and then release it when the second
2
hand moves to the 30-second position.
Although the second hand moves to the
0-second position 3 seconds after
pressing Button A, continue to press it.
When the second hand has reached
the 30-second position, reception is
started.
The indicator hand points to “4+.”
While the indicator hand points to “low”
or , reception is not started even with
operation for reception.
When the hand points to “low,” charge the watch by exposing it to light.
Check whether the watch is able/unable to receive GPS signals
When the hand points to
, reset the in-flight mode ( ).
Press for
6 seconds
1312
Direct the watch face upward and wait
May receive
6 units
・
0 units
E
a
s
3
Please note that it may be difficult to receive GPS
signals while you are in motion.
It takes a maximum of 2
minutes to complete reception.
It depends on the receiving
conditions.
< Display during reception (= satellites
acquisition status) >
The second hand indicates ease of receiving
(= number of GPS satellites from which GPS
signals are received).
The larger the number of
acquired satellites, the
easier it is to receive GPS
signals.
Second hand position
25-second
Number of satellites
5 units
Even when the hand points to
4 units or more, reception
may not be allowed.
To cancel the reception, press
Button B.
When the second hand points to “Y” or “N,”
4
reception is completed.
The reception result is displayed for 5
seconds.
Then, the hour and minute hands move, and
the time and date are adjusted. (The time
zone is also adjusted to the local time zone.)
Reception
result display
Y: SuccessfulN: Failed
Precautions on time zone adjustment
If the time zone is adjusted near a time zone boundary, the time of the adjacent time zone
may be displayed.
In some areas the boundaries observed by the watch may not exactly correlate to the actual
time zone markers on the land.
This does not indicate a malfunction. In this case, set the time zone in the manual time zone
setting mode.
When the time zone is adjusted while traveling on land, avoid doing so near time zone
boundaries. In addition, when the watch is used near time zone boundaries, make sure to
check the time zone setting, and manually set the time zone as necessary.
Display
・
n
a
n
C
o
・
t
r
e
c
e
i
v
2 units
e
C
P
Y
B
J
J
y
t
o
r
e
4 units
c
e
i
v
e
5 units
・
・
・
Check that the reception is successful after
the watch returns to the time display mode.
During movement of the hands and the date, the
3 units
Press
buttons cannot be operated.
Manually set Daylight Saving Time (DST).
1514
Manual time zone selection
7
Manual time zone selection
In places where the time zone cannot be adjusted, the time zone can be set manually.
How to manually set the time zone
Pull out the crown to the
1
first click
The second hand moves
to display the currently
set time zone.
0 1 2
Pull out
to the
1st click
Turn the crown and set the second hand to the time zone of the
2
destination
When the crown is turned,
the second hand moves to the
next zone.
Turn the crown
clockwise to
advance 1 time
zone.
Turn the
crown counter
clockwise to
set back 1 time
zone.
< Display of the indicator hand >
Displays ON/OFF setting of DST
(Daylight Saving Time).
DSTOFFON
Display
Hand position•DST
Push the crown back in
3
The second hand returns to
the time display mode.
The indicator hand returns
to the display of charging
status.
During movement of the date,
the buttons and crown cannot
be operated.
0 1 2
Push
back in
1716
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