Citizen E21 User manual

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CONTENTS
1. Features ......................................................................................................4
2. Before Using ...............................................................................................5
3. Names of Components...............................................................................6
4. Operating the Crown ................................................................................8
5. Setting the Time and Date ........................................................................9
• Procedure for Setting the Time
• Procedure for Setting the Date
6. Using the Chronograph.......................................................................... 12
7. Using the Alarm ...................................................................................... 16
8. Viewing the Charge Indicator ............................................................... 18
9. General Reference for Charging Times................................................ 20
10. Functions Unique to Solar-Powered Watches .................................... 22
• Insufficient Charge Warning Feature
• Over Charge Prevention Feature
11. Handling Precautions ........................................................................... 25
• Try to Keep the Watch Charged at all Times
• Charging Precautions
• Handling of Secondary Battery
12. Replacing the Secondary Battery........................................................ 27
13. Using the Tachymeter (When Provided) ............................................ 28
14. All-Reset ................................................................................................ 29
• All-Reset Procedure
15. Precautions ............................................................................................ 32
16. Specifications ........................................................................................ 38
English

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1. Features 2. Before Using
Repairs
All repairs performed on this watch, with the exception of repair of the band, are to be
performed at CITIZEN. This is because special technologies and equipment are
required to perform repairs, inspections and adjustments. Please make requests for
repairs to Citizen Service Center when having your watch repaired.
This watch is a solar-powered watch that contains a solar cell in its face that drives the
watch by converting light energy into electrical energy. It is also equipped with numerous
functions including:
• a chronograph function capable of timing for up to 12 hours in 1/5 second units;
• an alarm function that sounds an alarm for 20 seconds when the set time is reached
using a 12-hour indicator hand, and can be set to an accuracy of ±5 minutes; and,
• a charge indicator function that indicates the charged level of the secondary battery
to one of four levels.
To use this watch comfortably, always make sure to charge the watch to level 3 of the
charge indicator hand. Charge the watch by exposing the solar cell (watch face) to light by
referring to section 9 entitled “General Reference for Charging Times”. Once fully charged,
the watch will continue to run for about 8 months without additional charging.
<When Not Using for an Extended Period of Time>
Before storing your watch, always make sure to charge it until the charge level indicator is
pointing at least to level 3. Periodically charge your watch even while it is being stored.

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3. Names of Components
<Models with the crown at
the 3:00 position> <Models with the crown at
the 12:00 position>
• This manual describes the
procedure for using your watch
based on the example of a
model with the crown at the
3:00 position. The explanation
is the same for other models
except that crown is at the 12:00
position instead of the 3:00
position.
• The alarm scale is divided into
10 second units, while the
chronograph scale is divided
into 1/5 second units.
VThe design may vary depending on the model.
1. Charge indicator hand
2. Hour hand
3. Minute hand
4. Second hand
5. Chronograph hour hand
6. Chronograph minute hand
7. Chronograph second hand
8. Alarm indicator hand
9. Alarm hand
A. Button (A) (start/stop)
B. Button (B) (reset)
C. Button (C)
D. Crown
E. Alarm crown
10. Date
G. Chronograph scale
F. Alarm scale
(G) (4)
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(E)
(F)
(D)
(A)
(B)
(1)
(2)
(3)
(5)
(6)
(7)
(C)
(9) (10)
(8)
(3)
(5)
(D)
(2)
(4)
(6)
(7)
(8)
(9)
(10)
(A) (B)
(C) (E)
(F) (G)
(1)

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4. Operating the Crown
Once you have finished setting the time and so forth, always make sure push the crown in
to return it to the normal position (0 seconds position). If the crown is not pushed in far
enough, it may stop at the calendar correction position. If the watch is used with the crown
in this position, the date may be changed inadvertently or the crown may be damaged.
If the crown of your watch is of the screw-lock type, operate the crown after first loosening
the screw locking mechanism by turning the crown to the left. When finished operating
the crown, turn the crown to the right while pushing in after having returned it to the
normal position and tighten securely. Please be careful to ensure that the screw locking
mechanism is tightened sufficiently since failure to do so can cause bending of the crown,
incorrect time or impaired water resistance.
5. Setting the Time and Date
1. Pull the crown out to the time correction position (second click) when the second hand
has reached the zero seconds position.
2. Set the time by turning the crown.
• The date changes at 12:00
AM. Pay attention to AM
and PM when setting the
time.
3. Return the crown to the
normal position (0 position)
in synchronization with a
telephone time signal or
other time service.
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Hour hand
Second hand
Minute hand
Normal
position (0)
Time correction
position (2)
[Procedure for Setting the Time]

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Helpful Hint for Accurately Setting the Time:
After stopping the second hand at the 0 seconds position, advance the minute and hour
hands 4-5 minutes past the correct time and then move them back to the correct time.
Setting the time in this manner eliminates any play in the gears of the watch movement.
The hands of the watch can be made to advance at the correct time by pushing in the crown
in synchronization with a telephone time signal or other time signal.
[Procedure for Setting the Date]
• This watch is not equipped with a fully
automated calendar. It is necessary to correct
the date by operating the crown to the first day
of the following month in those months with
less than 31 days (months having 30 days and
February). (The date is displayed based on a
31 day cycle.)
1. Pull the crown out to the date correction position (first click).
2. Set the date by turning the crown to the left. If the crown is turned to the right, nothing
will happen and the date will not change.
• Do not attempt to set the date between the hours of around 9:00 PM and 1:00 AM. If
the date is set during this time period, the date may not change on the following day.
3. Once the date has finished being set, return the crown to the normal position (0 position).
* The date will change automatically at around 12:00 AM. If the date changes at 12:00
PM, advance the time by 12 hours.
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ON
OFF
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Normal
position (0)
Date correction
position (1)
Date