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Seiko ASTRON 8X22 User Manual

Seiko ASTRON 8X22
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8X22Astron GPS Solar World-Time
Complete User Guide
CONTENTSREAD FIRST
1
ASTRON 8X22 GPS SOLAR
          
1
¾
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 undertake the service.
¾
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 rust.
For proper and safe use of your SEIKO watch,
please read carefully the instructions in this
Complete User Guide before using it.

Table of Contents

Questions and Answers:

Seiko ASTRON 8X22 Specifications

General IconGeneral
MovementGPS Solar
Caliber8X22
Case MaterialTitanium
Water Resistance10 bar
Dial ColorBlack
GlassSapphire crystal
Case Thickness12.4 mm
Band MaterialTitanium
ModelASTRON
FunctionsGPS controlled time and time zone adjustment, World time function (40 time zones), Perpetual calendar

Summary

READ FIRST

Handling Cautions

Covers warnings and cautions for safe handling and operation of the watch.

Features

Details the key functions of the GPS solar watch, including GPS signal reception and solar charging.

GPS Time and Date Mechanism

Explains how the watch receives GPS signals to set the time and date accurately.

Time Zone Information

Explains time zones, DST, and Coordinated Universal Time (UTC) for watch settings.

Time Zone Adjustment

Guides on adjusting the watch's time zone when traveling or changing regions.

Manual Time Setting

Instructions for manually setting the watch's time and date.

Checking Time Zone Configuration

Explains how to determine when the watch's time zone data was last configured.

BEFORE USE

Names of the Parts

Identifies and labels the different components and buttons of the watch.

Indicator Hand Display and Reception Results

Explains the meaning of indicator hand positions for reception, charging, and DST status.

Time Zone and DST Settings Display

Shows how time zones and Daylight Saving Time settings are displayed on the watch.

Checking Charging Status

Details how to check the watch's current charge level.

How to Charge the Watch

Provides instructions on how to charge the watch using light.

BASIC OPERATION

GPS Signal Reception Locations

Explains where GPS signals can be easily received or cannot be received for optimal performance.

Time Zone Adjustment Process

Guides on how to adjust the watch's time zone using the button operation.

Setting Daylight Saving Time (DST)

Instructions for manually turning Daylight Saving Time (DST) ON or OFF.

Checking Time Zone and DST Settings

How to check the currently set time zone and DST status on the watch.

In-Flight Mode Operation

How to activate and deactivate the in-flight mode to prevent interference with airplane electronics.

Manual Time Zone Setting

Procedure for manually setting the time zone when GPS signals are unavailable.

Manual Time Adjustment

How to manually adjust the watch's time when GPS signals cannot be received.

Automatic Time Adjustment

Details the automatic time adjustment process using GPS signals based on exposure to light.

GPS Signal Reception Types

Explains the different types of GPS signal reception: Time adjustment, Time zone adjustment, and Leap second.

Leap Second Data Reception

Describes the automatic reception of leap second data for time compensation.

Checking Reception Success

How to check the success or failure of the last GPS signal and leap second data reception.

UNUSUAL MOVEMENT

Second Hand Movement and Energy Depletion

Explains second hand movement patterns indicating energy levels and functions.

Power Save Functions (Stopped Hands)

Details power save modes where the second hand stops to conserve energy.

PRESERVING WATCH QUALITY

Daily Care and Crown Maintenance

Guidelines for daily cleaning, moisture protection, and crown care.

Performance and Caliber/Case Number

Information on identifying the watch's performance specifications and model number.

Water Resistance Specifications

Details the watch's water resistance ratings and suitable usage conditions.

Magnetic Resistance and Influence

Explains the watch's magnetic resistance and how magnetic fields can affect it.

Band Care and Types

Instructions for caring for metallic, leather, polyurethane, and silicone watch bands.

Adjustable Clasp Operation

How to use and adjust the three-fold clasp on the watch band.

Lumibrite Features

Information on Lumibrite's luminous properties and how it absorbs and emits light.

Power Source and Battery Notes

Details the secondary battery, charging, and warnings related to battery replacement.

After-Sale Service and Overhaul

Information on warranty, repairs, and recommended periodic inspection and cleaning.

TROUBLESHOOTING

Unable to Receive GPS Signals

Checks and solutions when the watch fails to receive GPS signals.

Manual Time Setting for Poor Reception

How to manually set the time when GPS reception is poor or unavailable.

How to Manually Set the Time

Step-by-step guide for manually adjusting the watch's time and date.

Misaligned Hands/Date

Troubleshoot issues where the date, indicator, or hour/minute/second hands are misaligned.

Adjusting Preliminary Hand Position

Procedure to manually adjust the preliminary position of watch hands and date.

Canceling Light Detection

How to disable or enable the automatic light detection feature.

Troubleshooting Common Issues

A table detailing common watch problems, their causes, and solutions.

FUNCTION LIST/SPECIFICATIONS

Functions for Adjusting Time

Lists and describes functions related to setting and adjusting the watch's time.

Functions for Charging

Details functions related to the watch's solar charging and power management.

Specifications

Provides technical specifications for the watch, including frequency, temperature, and power source.

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