Citizen E365 User manual

1
Caliber No. of this watch:
E365
Thank you for your purchase of this Citizen watch. Before using the watch,
read this instruction manual carefully to ensure correct use.
Instruction manual on the web
You can access the web instruction manual of this watch using the QR
code.
https://www.citizenwatch-global.com/support/html/en/e365/e365.html
• Refer to the web manual to check the latest news and information.
• You can also see how to use enhanced features and functions such
as slide rules and tachymeters on the web site. It depends on models
whether they are equipped with enhanced features and functions or not.

2
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
26 -
33 ) 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

3
■ 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.
Safety precautions

4
Features
 Eco-Drive
No periodical battery replacement is needed. This watch is fueled by light.
Once charged fully, it keeps running through 365 days even without
additional charging.

5
CONTENTS
Before using this watch............................
7
Band adjustment........................................
8
Protective stickers.......................................
8
How to use a specially designed crown/button...........
9
Component identification.........................
10
Setting the time .................................
11
Adjusting the calendar ...........................
12
Charging your watch .............................
13
When you will not use the watch for a long time .........
17
When the stopped watch is exposed to light .............
18

6
Features
Troubleshooting .................................
19
Symptom and remedies.................................
19
Eco-Drive watch handling precautions ..............
20
Water resistance.................................
24
Precautionary items and usage limitations ..........
26
Specifications ...................................
34

7
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 pages
13
-.
Before using this watch

8
Before using this watch
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 (excluding
products containing the band adjustment tool).
Consult an authorized service center.
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 a specially designed crown/button
Some models are equipped with a specially designed crown and/or push button to
prevent accidental operation.
Screw down crown/button
Unlock the crown/button 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.
Screw
down
push
button
Rotate the
locking screw
counterclockwise, and
loosen until it stops.
Rotate the locking screw
clockwise, and tighten
firmly.

10
Component identification
• The illustrations in this instruction manual may differ from the actual appearance
of your watch.
Crown
Minute handHour hand
Second hand
Date indication
7
Crown's position

11
1Pull the crown out to position
2
as the second hand
points 0 second.
The second hand stops.
2Rotate the crown to set the time.
• Move the minute hand 4 or 5 minutes forward and move it
back to set its position more precisely.
• Change of date indication shows it just became 0:00 AM.
Take care the time set is AM or PM.
3Push the crown in to position
0
in accordance with a
reliable time source to finish the procedure.
Setting the time

12
Adjusting the calendar
The date indication on this watch is based on the 31-day calendar. Calendar
adjustment is required on the first days of March, May, July, October and
December.
• Do not adjust the calendar between 9:00 PM and 1:00 AM. Otherwise, the
calendar may not change correctly.
1Pull the crown out to position
1
.
2Rotate the crown counterclockwise to set the calendar.
• Clockwise rotation moves nothing.
3Push the crown in to position
0
to finish the
procedure.

13
This watch has a solar cell under the dial and stores the power
generated by the cell in its built-in rechargeable cell.
The cell is charged by exposing the dial to light such as direct
sunlight or fluorescent lamps.
For optimal performance, be sure to:
• Put the watch in a location where the dial is exposed to
bright light such as by the window even when it is not used.
• Expose its dial to direct sunlight for 5 or 6 hours at least
every month.
• Avoid leaving it in dark places for long periods of time.
Charging your watch
Continued on the next page

14
Charging your watch
CAUTION
• Do not charge the watch at a high temperature (about 60°C (140°F) or higher)
as doing so may cause movement malfunction.
• If the watch is obscured from light by long sleeves frequently, supplemental
charging may be needed to ensure continual operation.
• 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 below.
• When the watch is sufficiently charged, the second hand
will move normally.
• If you left the watch without charging for a few days 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 time and calendar are indicated correctly.

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.
• Exposing to direct sunlight is recommended to charge your watch. A fluorescent
lamp or interior lighting does not have sufficient illumination to charge the
rechargeable cell efficiently.
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 1 minute 6 minutes 40 hours
Outdoors (cloudy)
10,000 9 minutes 1 hour 70 hours
20 cm (7-7/8 inches)
away from a fluorescent
lamp (30 W)
3,000 30
minutes 3.5 hours 190 hours
Interior lighting
500 3 hours 25 hours −

17
Charging your watch
Duration without additional charging after charging the watch fully
About 1 year
When you will not use the watch for a long time
Do not keep this watch in a dark place. Keep it in a place where its dial is exposed
to light.
You can save current consumption by pulling the crown out to position
2
to stop
moving of the watch (power conserving status).

18
Charging your watch
When the stopped watch is exposed to light
The second hand starts moving in two-second interval soon after the watch is
exposed to light (quick start function).
• Light of indoor illumination may not be enough to keep it moving.
• Expose it brighter light and keep charging until the second hand moves every
seconds.

19
Troubleshooting
Symptom and remedies
Symptom Remedies Page
Movement of a hand seems strange
The second hand moves
once every two seconds.
Insufficient charge warning function is active.
Power reserve of the watch is nearly empty.
Charge immediately.
15
The second hand does not
move. Push the crown in to position
0
.
−
No hands move. Charge the watch under direct sunlight until
the second hand moves normally. 16
Calendar is incorrect.
The calendar on my watch
changes at about noon.
Adjust the time again to set AM and PM
correct. 12

20
<Always Make Sure to Recharge Frequently>
■ For optimal performance, your watch should remain fully charged.
■ Long sleeves may inhibit light transmission to your watch.
This may result in your watch loosing charge. In these cases
supplemental charging may be necessary.
■ When you take off the watch, place it in a bright location to ensure
optimal performance.
Eco-Drive watch handling precautions