Seiko ASTRON 8X22 Complete User Manual page 3

READ FIRST
This is a GPS solar watch.
This watch has the following features.
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.
Place where GPS signals can be easily received/
cannot be received P . 16
This watch responds to a total of 40 time zones around
the world
Time Zone P . 6
When the region or time zone where the watch is used
is changed, please carry out operation of "time zone
adjustment."
How to adjust the time zone P . 18
READ FIRST
Mechanism by which the GPS solar watch sets time and date
What GPS is
GPS stands for Global Positioning System, a satellite positioning system
for determining the current position on the earth.
24 satellites cover the earth, and at present, the system is operated by
approximately 30 GPS satellites.
Wherever you are in the world, the position can be determined
(positioned) by information from more than 4 GPS satellites.
GPS satellite
This is a satellite operated by the United States
Department of Defense (official name is NAVSTAR), and
orbits the earth at an altitude of 20,000 km.
Initially, this was a military satellite, but at present,
information is partially disclosed to the public and used in
various equipment including car navigation systems and
cellular phones.
The GPS satellite is mounted with a high-accuracy atomic
clock with an accuracy deviation of 1 second per 100,000
years.
Features
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.
How to charge the watch P . 14
Standard charging time P . 14
Unlike navigation equipment, this GPS solar watch is not designed to constantly receive GPS signals from GPS satellites without any operation.
This watch receives GPS signals only in the time zone adjustment mode, automatic or manual time adjustment mode.
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5
ASTRON 8X22 GPS SOLAR
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.
Automatic time adjustment
This watch is unable to receive GPS signals when the energy
stored in the watch is low.
Check the Charging Status
ASTRON 8X22 GPS SOLAR
Mechanism by which this watch sets the time
and date
This watch receives GPS signals from GPS satellites to set the
time and date based on the following information.
• Precise time and date based on the atomic clock
• Information about a time zone where you are
(The current location is basically positioned by more
than 4 GPS satellites, and which zone of the total of 40
time zones around the world you are in is identified.)
To receive information about a time zone where you
are, it is necessary to adjust the time zone.
How to adjust the time zone P . 18
Unlike navigation equipment, this GPS solar watch is
not designed to constantly receive GPS signals from
GPS satellites without any operation.
This watch receives GPS signals from GPS satellites
only in the time zone adjustment mode, automatic or
manual time adjustment mode.
P . 25
P . 13