Precautions on use of GPS solar watch in a region where the official time zone is changed

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Thank you for purchasing a Seiko GPS solar watch.

Official time zones around the world are subject to change depending on government policy of each country or region.
This product is designed so that the performance can be provided based on the time zone information at the following time:

Caliber code Case code Time zone information
Caliber 7X52 All models January 2012 (adjusted to 39 time zones)
Caliber 8X82 0AA0, 0AB0, 0AC0, 0AD0, 0AE0, 0AF0 January 2014 (adjusted to 40 time zones)
Corresponding to Australian Western Central Standard Time
0AB0-1, 0AB0・, 0AC0-1, 0AC0・, 0AE0・, 0AG0-1, 0AH0-1, 0AK0-1 Oct 2014 (adjusted to 40 time zones)
Corresponding to Russian time zone changes
Caliber 8X53 All models Mar 2015 (adjusted to 40 time zones)
Corresponding to the following regional time zone changes;
- Independent State of Papua New Guinea, Autonomous Region of Bougainville
- The Republic of Chile
- Mexico, stado de Quintana Roo
- United Kingdom of Great Britain and Northern Ireland, Turks and Caicos Islands
Caliber 8X22 All models Mar 2015 (adjusted to 40 time zones)
Corresponding to the following regional time zone changes;
- Independent State of Papua New Guinea, Autonomous Region of Bougainville
- The Republic of Chile
- Mexico, stado de Quintana Roo
- United Kingdom of Great Britain and Northern Ireland, Turks and Caicos Islands
Caliber 8X42
All models
January 2017 (adjusted to 39 time zones)

< How to find the time zone information used in your watch >
Locate the caliber code and the case code by referring to the markings on the case back of your watch.
*The markings are represented as “caliber code – case code”
e.g. 8X42-0AB0-3, 8X53-0AB0-2, 8X82-0AB0-1

In a region where the official time zone is changed after the time above, even if the time zone is adjusted by receiving GPS signals, the correct time cannot be displayed. Please carry out the following operations to display the correct time:

< To set the time of this watch in a region where the official time zone is changed >

1.Select the time zone appropriate for the current time in the target region by manual time zone setting.

2.Next, adjust the time by manual time adjustment.

3.To continue to use the watch in the same time zone, correct time can always be displayed by automatic time adjustment or manual time adjustment, unless the time zone setting is changed.

4.When moving from a region where the official time zone is changed to a region of another time zone, if you adjust the time zone of the watch to the second region, when you return to the original region, carry out the same operation from 1 to 3 above to display the correct time in the original region.

(Oct, 2014)
Last updated: May, 2018