Seiko ASTRON Basic Owner's Manual

2
BEFOREUSE
38
English
3
BASICOPERATION
39
English
・ Thesmaller the sky,themore
difficultitis to receiveGPS signals.
Inaddition,it will alsobe difficult
toreceiveGPS signals, ifthere is
somethingthatobstructs the GPS
signalsduringreception (in particular,
duringtimezoneadjustment).
Examples:
 ・Betweentallbuildings
 ・Nearwoodedarea
 ・Station/Airport
 ・Indoorswithwindows
 ※Radiosignals cannot
bereceiveddepending
onwindow glasstype.
Refertothe
 ×Cannotreceive.
Examples:
 ・Indoorswithoutwindows
 ・Underground
・
Duringpassageofatunnel
・Throughspecial glass
withthermal emission
shieldeffect,etc.
・
Closetoequipmentgenerating
noiseor performingwireless
communications
Difficulttoreceive
・Theskycannot be seen oronly
partoftheskycanbeseen.
・Thereis something hindering
thereception.
Cannotreceive
・Outdoorsunderanopensky
withgoodvisibility
Easytoreceive
Thereare places whereGPS signals canbe easily receivedandplaces where GPSsignals
cannotbereceived.
TimeZoneAdjustment（Whentheregionortimezonewherethewatchisusedischanged） PlacewhereGPSsignalscanbeeasilyreceived/PlacewhereGPSsignalscannotbereceived
Timezoneadjustment
Thetimezonewhereyouareislocalizedto adjustthe watch totheprecise
currenttimebyreceivingGPSsignals.
→Howtoadjustthetimezone P.40
※Failureorsuccessofreceptiondependsonthereceptionenvironment.→PlacewhereGPSsignalscanbe
easilyreceived/PlacewhereGPSsignalscannotbereceived
P.38
※Evenwhenthereceptionissuccessful,DaylightSavingTime(DST)cannotbeautomaticallyset.
SetDSTmanually. →SetDaylightSavingTime(DST)
P.41
※GPSsignalreceptionconsumesalotofenergy.
Keepinmindtoregularlychargethewatchbyexposetolightsothattheindicatorhandpointstothelevel
position(middle)orF(full).IfthechargingstatusisdisplayedasE(low),thereceptionwillnotstart
evenwithoperationofGPSsignalreception.
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.
→Howtomanuallysetthetimezone P.43
Whenthetimezoneisadjustedwhiletravelingonland,avoidtimezoneboundaries
tocarry out time zone adjustment in the representative cities in the time zone
wheneverpossible.
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.
Continuedonthefollowingpage

Seiko ASTRON Specifications

Frequency

frequency of crystal oscillator	32, 768 Hz
loss/gain (monthly rate)	±15 seconds

Operating Environment

operational temperature range	−10°C to +60°C
normal temperature range	5°C to 35°C

Power

power source	Secondary battery, 1 piece
duration of operation (fully charged)	Approximately 6 months
duration of operation (power save activated)	Approximately 2 years