Citizen Eco-Drive 010 User manual

INSTRUCTION MANUAL

To check the movement number
A case number—4 alphanumeric characters and 6 or
more alphanumeric characters—is engraved on the
case back. (Figure on the right)
The first 4 characters of the case number represent
the movement number of the watch. In the example
on the right, “ ” is the movement number.
Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
After reading the manual, store it in a safe place for future reference.
Be sure to visit the Citizen website at http://www.citizenwatch-global.com/ .
Here you will find a variety of information such as electronic setting guides,
answers to frequently asked questions, Eco-Drive recharging information and
more.
Engraving position example
The engraving position may
differ depending on watch
model.
1

Safety precautions — IMPORTANT
This manual contains instructions that should be strictly followed at all times
not only for optimal use, but to prevent any injuries to yourself, other persons or
property. We encourage you to read the entire booklet (especially, pages 24 to 37 )
and understand the meaning of the following symbols:
■ Safety advisories are categorized and depicted in this manual as follows:
DANGER
Highly likely to cause death or serious injury
WARNING
Can cause serious injury or death
CAUTION
Can or will cause minor or moderate injury or damage
2

■ Important instructions are categorized and depicted in this manual as follows:
(Following symbols are examples of Pictograms.)
Warning (caution) symbol followed by prohibited matters.
Warning (caution) symbol followed by instructions that should be
followed or precautions that should be observed.
3
Safety precautions — IMPORTANT

4
 ±1-second yearly time accuracy
±1-second yearly accuracy is realized on this watch.
 Eco-Drive
No periodical battery replacement is needed. This watch is fueled by light.
 Time difference setting function
When going abroad, you can easily adjust the time to the local one without
stopping the watch.
Features
• "Eco-Drive" is a Citizen original technology.

5
CONTENTS
Before using this watch...........................
7
Band adjustment........................................ 7
Protective stickers....................................... 8
How to use the screw-down crown ...................... 9
Component identification........................
10
“±1-second yearly accuracy” .....................
11
Precautions for comfortable use ..................
13
Charging your watch ............................
14
Setting the time difference.......................
19
Continued on the next page

6
CONTENTS
Setting the time ................................
20
Troubleshooting ................................
22
Eco-Drive watch handling precautions .............
24
Water resistance................................
28
Precautionary items and usage limitations .........
31
Specifications ..................................
38

7
Before using this watch
This watch has a rechargeable cell which is charged by exposing
the dial to light.
Expose the dial to direct sunlight regularly to charge the watch.
For details of charging, see page
14 -.
Band adjustment
We recommend seeking the assistance of an experienced watch technician
for sizing of your watch. If adjustment is not done correctly, the bracelet may
unexpectedly become detached leading to loss of your watch or injury.
Consult an authorized service center.
Continued on the next page

8
Before using this watch
Protective stickers
Be sure to remove any protective stickers that may be on your watch (case back,
band, clasp, etc.). Otherwise, perspiration or moisture may enter the gaps between
the protective stickers and the parts, which may result in a skin rash and/or
corrosion of the metal parts.

9
Before using this watch
How to use the screw-down crown
Some models are equipped with a specially designed crown to prevent accidental
operation.
Unlock the crown prior to operate your watch.
Unlock Lock
Screw down
crown
Rotate the crown
counterclockwise
until it releases from
the case.
Push the crown in to
the case. With gentle
pressure towards the
case, rotate the crown
clockwise to secure it
to the case. Be sure to
tighten firmly.

10
Component identification
• The illustrations in this instruction manual may differ from the actual appearance
of your watch.
• A solar cell is placed under the dial.
Minute hand
Hour hand
Second hand
Crown
Crown's position

11
“±1-second yearly accuracy”
This watch keeps ±1-second yearly accuracy, that is, its time goes forward or
backward within 1 second from correct time in a year. This means that the watch
has much higher time accuracy than most popular quartz watches (±15-second
monthly accuracy).
Meaning of “±1-second yearly accuracy”
“±1-second yearly difference from the correct time” does not mean that the
difference is simple accumulation of very small difference of every day. In other
words, ±1-second yearly accuracy does not mean ±1/365-second daily accuracy.
Accuracy of a watch minutely varies every moment depending on conditions of
use and change of environment. The variation is corrected through periodical
adjustment ceaselessly to keep the difference within 1 second whole a year. That is
the meaning of “±1-second yearly accuracy”.
Continued on the next page

12
“±1-second yearly accuracy”
To keep time accuracy high
It is variation of temperature that the most influential element on time accuracy of
quartz watches all through the everyday life.
To hold down the influence of variation of environmental temperature to minimum
and keep ±1-second yearly accuracy, this watch executes correction against the
variation every 1 minute.
However, the influence may go beyond capacity of correction and time difference
may exceed 1 second when the watch is used in an extreme temperature
environment or exposed to big change of temperature.
Please take care of the things below when you use a watch:
• Take care of conditions of use of the watch and variation of environmental
temperature.
• Do not apply strong shock to the watch.
• Adjust the watch correctly.
In addition, periodical maintenance is recommended.

13
Precautions for comfortable use
Take care of the things below to keep the high time accuracy of this watch.
• Wear the watch about 12 hours a day.
• Keep stable temperature environment (+5°C (41°F) - +40°C (95°F)) both while
wearing and while storing it.
• Charge the watch every day even if charging time is short not to make the
insufficient charge warning function active.
Sufficient power reserve can be kept with 12-hour use if you expose the watch on
your wrist to light consciously.
Wear it as long as you can.

14
Charging your watch
This watch has a solar cell under the dial and stores the power generated by the cell
in its built-in rechargeable cell.
It is charged when the dial is exposed to light.
For optimal performance, be sure to:
• Take care to expose the watch to light when wearing it.
• Charge the watch under an environment of normal operation temperature (+5°C
(41°F) - +40°C (95°F)) even when not wearing it (Take care not to leave it in a cold
place or others with extreme environmental conditions).
• The watch stops charging automatically after finishing (overcharging prevention
function). The function prevents damage to performance of the watch and
rechargeable cell due to overcharging.

15
Charging your watch
When the watch reaches a low charge state (insufficient charge warning
function)
When the power reserve becomes low, the second hand
moves once every two seconds. This is the insufficient
charge warning function. Be sure to fully charge your watch
immediately as outlined on page 16 .
• When the watch is sufficiently charged, the second hand
will move normally.
• If you do not charge the watch for 2 days or longer after
the insufficient charge warning movement has begun, the watch will be depleted
of all power and stop.
During the insufficient charge warning state
The watch cannot keep its time accuracy with its full performance.
Continued on the next page

16
Charging your watch
Charging time by environment
Below are the approximate charging times when exposing to light continuously.
Please use this table as a reference only.
• Time accuracy of this watch is affected by environmental temperature. Take care of
conditions and environment of use.
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 (cloudy) 10,000
12 minutes 2 hours 50 hours
20 cm (7-7/8 inches)
away from a fluorescent
lamp (30W)
3,000
40 minutes 4.5 hours 120 hours
70 cm (20-1/2 inches)
away from a fluorescent
lamp (30W)
1,000
2 hours 12 hours −
Interior lighting 500
4 hours 25 hours −

17
Charging your watch
Power save function
All hands stop automatically to save power as 7 days passed after starting to keep
the watch in a dark place such as in a case.
• The watch keeps its accuracy while saving power as long as it is under normal
operating temperature (+5°C (41°F) - +40°C (95°F)).
• The power save function is not activated when the position of the crown is 1or
2.
• The power save status ends and the hands return to indicate the current time as
the watch is operated or the dial is exposed to light and power generation starts.
Continued on the next page

18
Charging your watch
Duration without additional charging after charging the watch fully
About 6 months in normal use.
• The watch will keep running internally for up to 8 months with the power save
function.

19
You can move the hour hand in the 1-hour increments to indicate a time of another
place.
• Pulling the crown out to position 2will stop the second and minute hands as
well as the hour hand.
Take care when operating the crown.
1Pull the crown out to position 1.
The second hand does not stop.
2Rotate the crown to set the hour hand to the time ot
the place you want.
3Push the crown in to position 0.
Setting the time difference
1