Citizen Eco-Drive EP6051-14L User manual

1
CONTENTS
A. BEFORE USING .........................................................................................2
B. SETTING THE TIME AND CALENDAR .....................................................3
C. FUNCTIONS OF ECO-DRIVE WATCH.......................................................6
 InsufcientChargeWarningFunction..........................................................7
 QuickStartFunction .................................................................................... 7
 OverchargePreventionFunction................................................................. 7
D. CARE AND HANDLING DURING CHARGING ..........................................8
E. ABOUT THE ENERGY STORAGE CELL ..................................................9
F. TIME REQUIRED FOR CHARGING......................................................... 10
G. IN THESE CASES.....................................................................................12
H. DO NOT USING THIS WATCH WHILE DIVING WHEN... ........................ 14
I. WHEN USING FOR DIVING ..................................................................... 15
J. USING THE ROTATING BEZEL ............................................................... 18
K. PRECAUTIONS ........................................................................................20
L. SPECIFICATIONS.....................................................................................26
English

2
A. BEFORE USING
This watch is not powered by a conventional battery, but is powered by converting light
to electrical energy.
Once fully charged, the watch will continue to run for approximately 6 months without
additional charging. We do recommend exposing your watch to light every day to
ensure optimum performance. Always be sure to recharge the watch before it stops.
Your watch features an Overcharge Prevention Function so there is no need to worry
about overcharging your watch.
A special energy storage cell is used to store electrical energy. This special cell does not
require replacement and is a clean energy unit that does not use any toxic substances.
Before using, be sure to fully charge your watch by exposing it to light.
(See “F. Time required for charging”, for charge time reference)

3
B. SETTING THE TIME AND CALENDAR
■Setting the time
1. Stop the second hand by pulling out the crown.
2. Turn the crown to set the time.
3.Aftersettingthetime,rmlypushthecrownbackintoitsnormalposition.
Time-setting position
Crown
Solar cell
Normal position
[1] Three-hand models without calendar display
* If your watch has a screw-type crown, lift up the crown to loosen it before
operation.Besuretopressthecrowndownrmlyafteroperation.

4
Time
setting
position
Time
setting
position
Calendar setting
position
Crown
Date
Solar cell
Normal position
[2] Models with calendar (date and weekday) display
* If your watch has a screw-type crown, lift up the crown to loosen it before
operation.Besuretopressthecrowndownrmlyafteroperation.
[Date display models] [Date, day of the week
display models]
Solar cell
Crown
Date, day of the week
Normal position
Calendar setting
position

5
■Setting the time
1.Stopthesecondhandbypullingthecrownouttothe2ndclick(timesettingposition).
2. Turn the crown to set the time.
3.Thewatchwillstartafterthecrownisrmlypushedbackintoitsnormalposition.
■Setting the calendar
1.Pullthecrownouttothe1stclick(calendarsettingposition).
2.Setthedesireddatebyturningthecrowncounterclockwise.
3.Setthedesireddayoftheweekbyturningthecrownclockwise.
• Inthecaseofdatedisplaymodels,turningthecrownclockwisewillresultintheloose
play of the crown.
4.Afteryouhavesetthecalendar,besuretopressthecrownbacktoitsnormalposition.
• Do not adjust the calendar when the watch is reading as below. Otherwise the calendar
may not change correctly.
* Date display models ..... between 9:00 pm and 1:00 am
*Date,dayoftheweekdisplaymodels.....between9:00pmand4:00am

6
C. FUNCTIONS OF ECO-DRIVE WATCH
Ifthechargebecomesinsufcient,awarningfunctionwilloperateandthedisplay
changes, as below.

7
The second hand changes to a two second
interval movement to indicate insufcient recharging.
Eveninsuchacase,thewatchkeepscorrecttime,butabout
4 days after the two second interval movement begins, the
watch will stop.
Afterexposingthewatchtolight,rechargingtakesplaceand
the watch returns to one second interval movement.
Two second interval
movement
2 sec
2 sec
■Quick Start Function
The watch will stop if it is completely discharged.
It will begin to operate soon after it is exposed to light.
(However,thetimetostartmayvaryaccordingtothebrightnessofthelight.)
■Overcharge Prevention Function
You can recharge your watch without worry.
Once the special energy storage cell is fully charged, the overcharge prevention
function comes into operation and prevents over-charging of the energy storage cell.
■ Insufcient Charge Warning Function

8
D. CARE AND HANDLING DURING CHARGING
■Notes on Use
To maintain optimal performance, be sure to expose your watch to light regularly.
Please note that if you wear long sleeves, your watch may be hidden from light and
mayresultininsufcientcharging.Assuch,additionalexposuretolightmaybe
necessary.
• Whenyoutakeyourwatchoff,besuretoplaceitinasbrightanareaaspossible.
■Notes on recharging
• Avoidrechargingyourwatchinareasofhightemperatures(overabout60°C/
140°F),otherwisethesensitivecomponentsofthewatchmaybecomedamaged.
(e.g.)Incandescentlightsgenerateheatsufcienttodamageyourwatch.Besure
tokeepthewatchatleast50cm(20inches)awayfromthebulbsonodamage
occurs.WedonotrecommendtheuseofHalogenbulbsforrecharging.
 Neverplaceyourwatchonthedashboardorreardeckofavehicleastheheat
generated in these areas can damage your watch.

9
E. ABOUT THE ENERGY STRAGE CELL
Unlike ordinary watches, the special energy storage cell used in your watch does
not need regular replacement. This is a clean energy cell that will last the life of the
watch.
CAUTION:
The energy cell should last the life of the watch. Never allow anyone other than an
AuthorizedServiceCentertoreplacethiscell.Themovementisdesignedtooperate
with only the original energy storage cell. If an alternate cell is installed, such as a
conventional battery, the battery may become overcharged resulting in damage to the
movementand/orburstingofthecell,whichcouldcauseinjurytotheuser.

10
F. TIME REQUIRED FOR CHARGING
Below are the approximate times required for charging when exposing the watch dial to
light continuously. Please use this table as a reference only.
Environment Illuminance
(lx)
Charging time (approx.)
To work for one
day
To start working
normally when the
cell is discharged
To become fully
charged when the
cell is discharged
Outdoors (sunny) 100,000 2 minutes 18 minutes 11 hours
Outdoors (cloudy) 10,000 12 minutes 3 hours 40 hours
20 cm (7-7/8 inches)
from a fluorescent lamp
(30 W)
3,000 40 minutes 8 hours 130 hours
Interior lighting 500 4 hours 60 hours —

11
* The recharging time is the time the watch is continuously exposed to direct light.
To become fully charged when the cell is discharged:
Time required to fully charge when the watch has completely stopped.
Toworkforoneday:
Timerequiredtochargethewatchsufcientforone-dayusewithone-second
interval operation.
CAUTION:
When recharging the watch after it is completely in the stop state, be sure to pull out the
crown to the time setting position.
Afterrecharging,setthetimeandpushthecrownrmlybackintoitsnormalposition.

12
G. IN THESE CASES
[If the watch warns that the energy is running short]
The second hand starts moving at two second intervals in
order to warn that the watch will stop functioning after about
1week.(Insufcient Charge Warning Function)
In such a case, expose your watch to light for a while to
cancelthewarning.(Thesecondhandreturnstomovingat
onesecondintervalswhentheenergyisrecharged.)
If the watch is left short of energy, it will stop functioning
after 4 days or so.
Twosecond
intervalmovement

13
[If the watch warns you to set the time.]
When the watch that has stopped is exposed to light, the
secondhandstartstwosecondintervalmovement(Quick
StartFunction).Thetimeelapsedbeforethesecondhand
starts moving depends on the illuminance of the light.
Even so, the second hand continues the two second interval
movement to tell you that the watch indicates an incorrect
time because it had stopped.
In such a case, set the hands to the correct time.
*Ifthewatchisinsufcientlyexposedtolight,thesecond
hand will soon switch to moving at two second intervals in
order to warn that the energy is running short.
Twosecond
intervalmovement

14
H. DO NOT USING THIS WATCH WHILE
DIVING WHEN...
PROHIBITED
Do not use your watch while diving when the following occur.
•Theinsufcientrechargingwarningfeatureisactivated.Asthebatteryapproaches
theendofitslife,thesecondhandbeginstomovein2secondincrements.(When
this happens, expose the watch to light so that it recharges and the second hand
returnstonormalmovement.)
• The watch stops or exhibits any abnormal operation.

15
I. WHEN USING FOR DIVING
Precautions when Using during Diving:
*Whenusingadiver'swatch,pleasemakesurethatyouhavereceivedthe
proper education and training for various types of diving, and observe all
rules.
*Pleasemakesuretousethewatchproperlybasedonathorough
understanding of watch handling and precautions. Please note that
failure to operate the watch in a manner not described in the user's
manual may prevent the watch from functioning properly.

16
<Before Diving>
*Pleasemakesurethatthecrownispushedinrmlyandthescrewissecurely
tightened.
*Pleasecheckthatthebandissecurelyattachedtothewatch.
*Pleaseconrmthattherearenocracks,scratches,chipsorotherabnormalitiesin
the band and glass.
*Pleasecheckthattherotatingbezelrotatesproperly.
*Pleasecheckthatthetimeanddatearesetcorrectly.
*Pleasecheckthatthesecondhandismovingproperly.
If the second hand is moving at two-second intervals, this means that the watch is
notsufcientlycharged.Sufcientlychargethewatchwhenthisoccurs.
<During Diving>
* Never attempt to turn or pull out the crown underwater. This can cause defective
water resistance or other malfunction.
* Be careful to avoid bumping your watch on hard objects such as diving equipment
orrocks.

17
<After Diving>
*Completelywashoffanyseawater,mudorsandadheredtothewatchwithpure
wateraftercheckingthatthecrownandscrewaretightened.Wipeoffanyexcess
moisture with a dry cloth.

18
J. USING THE ROTATING BEZEL
The rotating bezel can be used as a reference for elapsed time during diving or for the
amount of time remaining relative to a predetermined amount of time.
[Setting the Rotating Bezel]
* Only turn the rotating bezel to the left. It cannot be rotated in the opposite direction
(totheright)topreventtheriskofincorrectoperation.
* Align the ▼markontherotatingbezel
with the minute hand. After a certain
amount of time has elapsed, the elapsed
time can be determined from the scale on
the rotating bezel.
Turning
direction
Elapsedtime
Determination of Elapsed Time

19
Determination of Remaining Time
* The remaining time can be determined by
aligning the ▼markontherotatingbezel
with the target time.
Remainingtime