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INSTRUCTION MANUAL FOR WATCH CALIBRE
5X53
THIS PRODUCT CONTAINS A BUTTON BATTERY
If swallowed or placed inside any part of the body, the battery can
cause severe or fatal injuries within 2 hours or less.
Button batteries are hazardous whether new or used. Keep batteries
out of reach of children.
If you think the battery may have been swallowed or placed inside any
part of the body, seek immediate medical attention. Contact the
Australian Poisons Information Centre immediately on 13 11 26
(New Zealand 0800 764 766) for 24 / 7 fast, expert advice.

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  • Page 1 INSTRUCTION MANUAL FOR WATCH CALIBRE 5X53 THIS PRODUCT CONTAINS A BUTTON BATTERY If swallowed or placed inside any part of the body, the battery can cause severe or fatal injuries within 2 hours or less. Button batteries are hazardous whether new or used. Keep batteries out of reach of children.
  • Page 2 READ FIRST CONTENTS Complete User Guide 5X53 GPS SOLAR WATCH (Dual time)
  • Page 3 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.
  • Page 4: Read First

    { If the pins protrude from the band. thinners etc.) are vaporizing magnetism or static electricity ½ Immediately consult the retailer from whom the watch was purchased or SEIKO { Places where the temperature drops below { Dusty places WORLDWIDE SERVICE NETWORK.
  • Page 5 Immediately consult the retailer from whom the watch was the BAR (barometric pressure) display. For diving, use purchased or SEIKO WORLDWIDE SERVICE NETWORK. watches specifically designed for diving. Do not leave moisture, sweat and dirt on the watch for a long time.
  • Page 6 READ FIRST ASTRON 5X53 GPS SOLAR            Features This is a GPS solar watch. This watch has the following features. GPS signal reception Solar charging Function Automatic time adjustment function This watch operates by solar charging. This watch automatically adjusts the time in This watch can be set to the precise local time by just one button operation anywhere in the accordance with action patterns during use.
  • Page 7 READ FIRST ASTRON 5X53 GPS SOLAR            Mechanism by which the GPS solar watch sets time and date GPS satellite Mechanism by which this watch sets the time and date This is a satellite operated by the United States This watch receives GPS signals from GPS satellites to set the Department of Defense (official name is NAVSTAR), and time and date based on the following information.
  • Page 8 READ FIRST ASTRON 5X53 GPS SOLAR            Time zone 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 39 zones as of March 2018.
  • Page 9 READ FIRST ASTRON 5X53 GPS SOLAR            The following functions are included To set only the time When the region or time zone where the watch is used is changed The watch displays the precise time of the time zone that is set by operation of “manual time adjustment.”...
  • Page 10 READ FIRST ASTRON 5X53 GPS SOLAR            How to check when the time zone information was configured for your watch By referring to caliber-case number shown on the case back, you will be able to determine The case back shows the caliber-case number of your watch. when the time zone data was configured.
  • Page 11: Table Of Contents

    CONTENTS ASTRON 5X53 GPS SOLAR            CONTENTS 1. READ FIRST .....................2 5. IN CASE OF AN UNUSUAL MOVEMENT OF THE SECOND HAND ...33 Second hand movement and watch state (energy depletion 2. CONTENTS ......................9 forewarning function) .................33 3. BEFORE USE ....................
  • Page 12: Before Use

    BEFORE USE ASTRON 5X53 GPS SOLAR            Names of the parts Hour hand Minute hand Button A Day hand (day of the week) Crown Indicator hand Date Second hand Button B Sub-dial (12-hour system) Sub-dial AM/PM hand  Display of city name may vary depending on the model. Continued on the following page...
  • Page 13: Indicator Hand Display And Reception Result Display

    BEFORE USE ASTRON 5X53 GPS SOLAR            Indicator hand display and reception result display Display of receiving process Display of reception result Receiving 1 (time 4+ (time zone Receiving leap ... Reception successful process adjustment) adjustment) second data (8-second position) ...
  • Page 14: Time Zone Display And List Of Time Zones Around The World

    BEFORE USE ASTRON 5X53 GPS SOLAR            Time zone display and list of time zones around 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) has been adopted in countries marked with a .
  • Page 15: Check The Charging Status

    BEFORE USE ASTRON 5X53 GPS SOLAR            Check the charging status The indicator hand position shows whether this watch is able or unable to receive GPS signals. In addition, for the low charging state, the movement of the second hand shows the energy depletion state in further detail. ...
  • Page 16: About Charging

    BEFORE USE ASTRON 5X53 GPS SOLAR            About charging How to charge the watch Standard Charging Time GPS signal reception consumes a lot of energy. It is necessary to charge Expose the dial to light to charge the watch. the watch by exposing it to light so that the indicator hand points to the “middle”...
  • Page 17: Basic Operation (How To Set The Time/How To Receive Gps Signals, Etc.)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Basic operation flow 1. Check the place where GPS 2. Set the time zone and set the time and date signals can be easily received ...
  • Page 18: Gps Signal Reception

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            GPS signal reception Place where GPS signals can be easily received/Place where GPS signals cannot be received Easy to receive Difficult to receive Cannot receive •...
  • Page 19 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            List of GPS signal reception methods (characteristics of all three types) GPS signal reception Q & A Reception Leap second data Q: When the watch is moved to a different time zone, does the watch Time adjustment Time zone adjustment method...
  • Page 20 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Check that reception was successful (reception result display) The type of reception and reception result (success or failure) of the last GPS signal reception is displayed for 5 seconds. When the reception result Press Button A once and Check that reception was successful (within 5 seconds)
  • Page 21: To Adjust The Time Zone And Time By Gps Signal Reception (Time Zone Adjustment)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            To adjust the time zone and time by GPS signal reception (Time Zone Adjustment) Time zone adjustment The time zone where you are is localized to adjust the watch to the precise current time by just one button operation anywhere Precautions on time zone adjustment in the world.
  • Page 22 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            How to adjust the time zone Go to a place where Continue to press Button B (3 seconds), When the second hand points to GPS signals can be and then release it when the second hand Direct the watch face upward and wait...
  • Page 23: To Adjust Only The Time By Gps Signal Reception (Manual Time Adjustment)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            To adjust only the time by GPS signal reception (manual time adjustment) Manual time adjustment The watch can be set to the precise current time of the currently set time zone. (The time zone is not changed.) ...
  • Page 24 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            How to manually adjust the time Go to a place where Continue to press Button A (3 seconds), and When the second hand points GPS signals can be then release it when the second hand Direct the watch face upward and wait...
  • Page 25: To Set The Watch To The Local Time Of The Destination In An Airplane, Etc. (Manual Time Zone Setting)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            To set the watch to the local time of the destination in an airplane, etc. (Manual time zone setting) Manual time zone setting ...
  • Page 26: Set Dst (Daylight Saving Time)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Set DST (Daylight Saving Time)  Set the DST (Daylight Saving Time) of the sub-dial. P . 27 Turn ON DST (Daylight Saving Time) ...
  • Page 27 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Check the time zone and DST (Daylight Saving Time) settings Pull out the crown to the first click Pull out the crown to the second click Push the crown back in The second hand moves to display the currently set time zone.
  • Page 28: To Adjust Time On Sub-Dial

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            To adjust time on sub-dial Manual time zone setting of the sub-dial Adjust the sub-dial by selecting the time of the time zone. ...
  • Page 29 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Set the DST (Daylight Saving Time) of the sub-dial. DST (Daylight Saving Time) can be manually set.  Normally, the indicator’s DST (Daylight Saving Time) is not changed to “AUTO (automatic)” if the sub-dial is adjusted via manual time zone selection. Turn DST (Daylight Saving Time) manually on or off, according to whether DST (Daylight Saving Time) is implemented or not.
  • Page 30: Switching Between The Main-Dial And Sub-Dial (Time Transfer Function)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Switching between the main-dial and sub-dial (Time Transfer Function) Your watch can switch between its main-dial and sub-dial. Both the conditions for DST (Daylight Saving Time) set in the main-dial and the conditions for DST (Daylight Saving Time) set in the sub-dial switch.
  • Page 31: Automatic Time Adjustment

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Automatic time adjustment This watch can be set to the precise current time by automatically receiving GPS signals by exposure to bright light outdoors under an open sky to adjust the time.
  • Page 32: When Boarding (In-Flight Mode ( ))

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            When boarding (in-flight mode ( )) In-flight mode ( ) Set to the in-flight mode ( ). Set to the in-flight mode ( ) Continue to press Button B where the reception may influence Pull out the crown to the first click...
  • Page 33: Leap Second (Automatic Leap Second Reception Function)

    BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Leap second (Automatic leap second reception function) Leap second Receiving Leap Second Data Receiving the leap second data The leap second is to compensate for deviations from the universal When the GPS signal reception (automatic time time (UT) which is astronomically determined and the “International adjustment, manual time adjustment, or time zone...
  • Page 34 BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.) ASTRON 5X53 GPS SOLAR            Check the leap second data reception was successful The reception result (success or failure) of the regular leap second data reception is displayed for 5 seconds. Press Button A and then Press Button A and then release it while the result of the The result of the reception is displayed...
  • Page 35: In Case Of An Unusual Movement Of The Second Hand

    IN CASE OF AN UNUSUAL MOVEMENT OF THE SECOND HAND ASTRON 5X53 GPS SOLAR            Second hand movement and watch state (energy depletion forewarning function) Movement of the second hand shows the state of the watch (working functions). 2-second interval movement/5-second interval movement are brought about When the energy stored in the watch runs low, the energy depletion forewarning function will work.
  • Page 36 IN CASE OF AN UNUSUAL MOVEMENT OF THE SECOND HAND ASTRON 5X53 GPS SOLAR            The second hand stops at the 15-second position/ 45-second position (Power save function) When the watch is not exposed to light for a long time, the power save function will work. Power Save 1 Power Save 2 The second hand stops pointing at the 15-second...
  • Page 37: To Preserve The Quality Of Your Watch

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Daily care Performance and caliber / case number The case back shows the performance and caliber / ● The watch requires good daily care case number of your watch •...
  • Page 38: Water Resistance

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Water resistance Refer to the table below for the description of each degree of water resistant performance of your watch before using. Indication on the case back Water resistant performance Conditions of Use This watch can be used for swimming and other such sports.
  • Page 39: Magnetic Resistance (Magnetic Influence)

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Magnetic resistance (Magnetic influence) Examples of common magnetic products that may affect watches This watch may be affected by nearby magnetism and temporarily gain or lose time or stop operating. ...
  • Page 40: Band

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Band The band touches the skin directly and becomes dirty with sweat or dust. Therefore, lack of care may accelerate deterioration of the band or cause skin irritation or stain on the sleeve edge. The watch requires a lot of attention for long usage.
  • Page 41: How To Use An Easy Adjust Type Clasp

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            How to use an easy adjust type clasp ● How to adjust the length of the band Some bands are provided with an easy adjust type clasp for fine adjustment of You can lengthen the band by up Fasten the clasp by pressing the the band's length.
  • Page 42: How To Use An Adjustable Three-Fold Clasp

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            How to use an adjustable three-fold clasp ● How to adjust the length of the leather band Some bands are provided with an adjustable three-fold clasp. With pressing buttons on both sides Press the push buttons again to If the clasp of the watch you purchased is of the flap, pull the leather band out...
  • Page 43: How To Use An Adjustable Three-Fold Clasp (Pointed Tip Diving Type)

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            How to use an adjustable three-fold clasp (Pointed tip diving type) ● How to adjust the length of the band The rubber bands and some leather bands are provided with an adjustable Open the band clasp by pushing Pull the pins out of the three-fold clasp (Pointed tip diving type)
  • Page 44: Lumibrite

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Lumibrite If your watch has Lumibrite Lumibrite is a luminous paint that is completely harmless to human beings and natural environment, containing no noxious materials such as radioactive substance. Lumibrite is a newly-developed luminous paint that absorbs the light energy of the sunlight and lighting apparatus in a short time and stores it to emit light in the dark.
  • Page 45: Power Source

    TO PRESERVE THE QUALITY OF YOUR WATCH ASTRON 5X53 GPS SOLAR            Power Source The battery used in this watch is a special secondary battery,  Overcharge prevention function which is different from ordinary batteries. Unlike an ordinary silver When the secondary battery is fully charged, the overcharge oxide battery, the secondary battery does not require periodic prevention function is automatically activated to avoid further replacement.
  • Page 46: After-Sale Service

    ● Notes on guarantee and repair ● Inspection and adjustment by disassembly and cleaning (overhaul) • Contact the retailer from whom the watch was purchased or SEIKO WORLWIDE SERVICE NETWORK for repair or overhaul. • Periodic inspection and adjustment by disassembly and cleaning •...
  • Page 47: Troubleshooting

    TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            When the watch is unable to receive GPS signals Points to be checked ● The second hand stops at the 45-second position before the reception is completed (The watch enters the power save 2 state) When the watch does not start receiving or is unable to receive GPS •...
  • Page 48 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            How to manually set 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. • When adjusting the time, the date will also be adjusted. Continue to press Button B (6 seconds) Push the crown back in Pull out the crown to the...
  • Page 49: When The Sub-Dial, Day Hand, Date, Indicator Hand Or Hour/Minute/Second Hand Position Is Misaligned

    TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            When the sub-dial, day hand, date, indicator hand or hour/minute/second hand position is misaligned Points to be checked The preliminary position is misaligned due to the following reasons. ● Reception was successful (the reception result is displayed as “Y”), but time has gained or lost.
  • Page 50 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Preliminary position of Adjust the preliminary position of the sub-dial, day hand, date, indicator hand, and this watch hour/minute hands The preliminary position of the date is Turn the crown to adjust the Pull out the crown to the second Continue to press Button B “1”...
  • Page 51 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Turn the crown to adjust the day Press Button B and then release hand (a day of week) to “SUN (Sunday)” The watch enters the mode to  When “SUN (Sunday)” is displayed, go to operation adjust the preliminary position of the day hand.
  • Page 52 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Press Button B and then release it Turn the crown to adjust the date to “1” The watch enters the mode to adjust the Adjust the date to display “1. ” preliminary position of the date (and the ...
  • Page 53 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Press Button B and then Continue to press Button Set the time by Push the crown back in release it A (3 seconds) receiving GPS signals The watch goes into the The hour/minute hands The watch exits the mode to When you are in a place where preliminary position setting...
  • Page 54: Troubleshooting

    TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Troubleshooting Reference At trouble Possible causes Solutions pages The energy depletion forewarning function is activated. Charge the watch sufficiently until the second hand moves The second hand moves at (P . at 1-second intervals and the indicator hand points to the middle 2-second intervals.
  • Page 55 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Reference At trouble Possible causes Solutions pages The charging status has been Charge the watch sufficiently until the charging status is middle P . 13 displayed as “low” position. displayed as the “middle” position or “full” position. position Reception is not started (P .
  • Page 56 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Reference At trouble Possible causes Solutions pages Check DST (Daylight Saving Time) setting. DST (Daylight Saving Time) setting does not correspond P . 25 Do the time zone adjustment when you are in a place where it is easy to receive to the addition conditions of DST (Daylight Saving GPS signals.
  • Page 57 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Reference At trouble Possible causes Solutions pages The position of the second (1) The automatic hand position alignment function is activated to automatically hand showing “reception The preliminary position of the second hand is adjust the position.
  • Page 58 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Reference At trouble Possible causes Solutions pages The stopped watch was exposed to an adequate light for longer than the The time required for charging the watch depends entirely on the amount of time required to fully The amount of exposed light is too weak.
  • Page 59 TROUBLESHOOTING ASTRON 5X53 GPS SOLAR            Reference At trouble Possible causes Solutions pages The automatic leap second reception It takes up to 18 minutes to complete the leap second reception. P . 31 function has been activated, and the Use the watch with reference to the “Place where GPS signals can be easily Indicator hand The position of the hand indicator hand indicates the “LEAP SEC.
  • Page 60: Function List/Specifications

    FUNCTION LIST/SPECIFICATIONS ASTRON 5X53 GPS SOLAR            Index Functions to adjust the time Functions to charge GPS signal reception  P. 16 Solar Charging Function ………………… A solar cell underneath the dial converts any form  P . 14 of light into electrical energy to power the watch and the power is stored in a secondary battery.
  • Page 61 (Time Transfer Function) ……………………… main-dial and sub-dial. It can also switch DST. IC, 4 pieces P . 28   The specifications are subject to change without prior notice for product improvement. Declaration of Conformity Copyright ©2018 by SEIKO WATCH CORPORATION...

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