Citizen CTZ-B8155 User manual

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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.
Visit the Citizen website (http://www.citizenwatch-global.com/) to view visual guides
for operation of your watch. Some models may be equipped with external features
(calculation scale, tachymeter, etc.). Visual guides for operation of such external
features can also be found on the website.
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.
Engraving position example
The engraving position may differ
depending on watch model.

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Safety precautions — IMPORTANT
This manual may contain certain safety advisories. Your watch should be used in
accordance with these advisories at all times to ensure optimal enjoyment of your
watch and to prevent injury to yourself, other persons and/or damage to property.
Understand the meaning of the following symbols and read pages from 56 to 69.
■ 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
■ Important instructions are categorized and depicted in this manual as follows:
Warning (caution) symbol followed by instructions that should be
followed or precautions that should be observed.
Warning (caution) symbol followed by prohibited matters.

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The following must be done before using the watch:
●Checking the power reserve Page 16
Check the charge level of the watch.
●Setting the World Time Page 18
Select the city or time difference for which you want to indicate the time and date.
●Checking the time signal reception Page 17
Check the result of the time signal reception.
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 9to 15.
Before using the watch

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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 your nearest 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.
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.
Before using the watch Before using the watch

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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.
Recessed buttons
Press the button with a non-marring narrow-tipped
object such as a wooden toothpick.
• Metal objects may cause marring or scratching of the
button.
Before using the watch Before using the watch

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Before using the watch ............... 3
Component identification ........... 8
Recharging your watch................ 9
Checking the power reserve.......16
Checking the time signal
reception ...............................17
Setting the World Time .............18
Notes on the time signal
reception ...............................26
Receiving the time signal manually
(On demand reception)...........34
Switching Summer Time and
standard time ........................36
Adjusting the time/calendar
manually................................42
Table of contents

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Checking and correcting the current
reference position ..................46
Troubleshooting .......................50
Resetting the watch
—All Reset ............................54
Eco-Drive Watch Handling
Precautions............................ 56
Water resistance .......................60
Precautions and usage
limitations .............................63
Specifications............................70

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Component identification
The illustrations in this instruction manual may differ from the actual appearance of your
watch.
Hour hand
Second hand
Crown
Crown position
Minute hand
Lower right button ( )
Date indication
City or time difference
indication
Signal reception indication
• OK/NO: Reception result
• RX: Reception in progress
Summer Time indication
(ON/OFF)