ENGLISH
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
You can also see how to use such features and functions, which is not covered with the instruction manual, in the web site.
https://www.citizenwatch-global.com/
CITIZEN YF05
. Some models may be equipped with enhanced features functions such as slide rules and tachymeters.
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.
The first 4 characters of the case number represent the movement number of the
watch.
In the example, “ ” is the movement number.
Engraving position
example
The engraving position may
differ depending on watch
model.
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, page
understand the meaning of the following symbols:
⿎Safety advisories are categorized and depicted in this manual as follows:
DANGER
WARNING
CAUTION
⿎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.
Highly likely to cause death or serious injury
Can cause serious injury or death
Can or will cause minor or moderate injury or damage
9
) and
Features
Connection with a smartphone through the dedicated app
Time and calendar are synchronized with those on the smartphone.
To get the dedicated app, access a download site of apps for your
smartphone.
Built-in activity monitor
The watch records your activity and you can see its data on the
dedicated app.
User-configurable buttons
You can assign three of the functions below to the buttons of the watch
as you want by setting it on the dedicated app.
• Taking a picture
• Indicating the second timezone (local time)
• Indicating notifications
• Indicating the date
• Changing the mode
• Searching the smartphone
• Play/pause music
• Turning up the volume
• Turning down the volume
• Recording the progress of activity achievement
• Indicating estimated arrival/travel time
CONTENTS
Safety precautions — IMPORTANT .......................................... 1
Features ................................................................................. 1
Before using this watch ........................................................... 2
Connection with the smartphone ...........................................................2
Band adjustment ....................................................................................2
Protective stickers ..................................................................................2
Component identification ....................................................... 2
Before connecting with a smartphone ..................................... 2
Requirements for connection..................................................................2
Execute pairing with the smartphone ...................................... 2
Executing pairing ...................................................................................2
About synchronization ............................................................ 3
Time reception ....................................................................... 3
The activity monitor ............................................................... 3
The screen of the dedicated app .............................................. 4
[Home] screen ........................................................................................4
[Customization] screen ...........................................................................4
[Alerts] screen ........................................................................................4
[Profile] screen .......................................................................................4
Checking the status of the watch connected ............................ 4
Assigning functions to the buttons of the watch ...................... 5
Using the buttons as a set .......................................................................5
Indication of the function hand (small hand) ........................... 6
Setting alarm ......................................................................... 6
Setting notification ................................................................ 7
Checking and correcting the reference position ....................... 7
Battery replacement ............................................................... 8
Troubleshooting ..................................................................... 8
About Bluetooth ..................................................................... 9
Water resistance ..................................................................... 9
Precautionary items and usage limitations .............................. 9
Specifications ........................................................................10
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CITIZEN YF05 Instruction manual
Before using this watch
Connection with the smartphone
Use the dedicated app to connect the watch with your smartphone.
Download an app compatible with your smartphone from an app store.
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.
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.
Component identification
Minute handHour hand
C
Button
7
B
Button
8
9
10
A
Button
Function hand
(small hand)
Date indication
31
1
30
29
28
27
26
25
24
23
22
21
20
CONNECTED
ALERT
19
TIME2
18
17
2
3
4
5
6
50
GOALSTART
DATE
MODE
ALARM
14
16
15
11
12
13
Execute pairing with the smartphone
Execute pairing at first when connecting the watch and your smartphone.
• Unique pairing information is saved on the watch and smartphone as pairing is
executed.
• Make an account at the startup of the dedicated app. An e-mail address which can
be used for e-mail reception is required for making an account.
• Keep the mail address and password for the account in case they are required.
Executing pairing
• For pairing, you have to operate both the watch and the smartphone.
• Turn on Bluetooth and function(s) related with location information on your
smartphone.
1
Download the dedicated app “CITIZEN CONNECTED” at an app site and install
it.
2
Start the dedicated app.
• Keep the app screen displayed until pairing is finished.
3
Make an account.
• Sign in if you had logged out without executing pairing after making an account
before.
• Once signed in, the status is kept regardless whether the app is activated or
deactivated.
4
Press the right middle button B and tap [CONTINUE] on the screen of the app.
• The illustrations in this instruction manual may differ from the actual appearance
of your watch.
Before connecting with a smartphone
This watch communicates with smartphones
through Bluetooth Low Energy power-saving
communication technology.
You must install the dedicated app “CITIZEN
CONNECTED” on your smartphone. After
installing it, start it, make an account and execute
pairing between the phone and the watch to connect
them.
The flow of connection is as follows.
• An e-mail address which can be used for e-mail
reception is required for making an account.
• You do not have to execute sign-in and/or pairing
every time you connect the watch and the
smartphone.
* The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG, Inc.
* Android is a registered trade mark of Google Inc.
* iOS is a name of an operating system of Apple Inc. IOS is a
trademark or registered trademark of Cisco in the U.S. and
other countries and is used under license.
Requirements for connection
Android
iPhone
Bluetooth
You can see information about compatible smartphones at the link below.
https://citizenwatch-global.com/support/yf05/index.html
Actual screens and/or indication of the dedicated app may differ from those on this
manual depending on your usage conditions and/or changes of specifications at update
of the app.
In that case, follow instructions on the actual screen of the app.
Android OS 5.0 or later
iOS 10.0 or later (iPhone 5 or later)
Bluetooth smart/4.2 Low Energ y
Install the dedicated app
Start up the app
Sign in
(Account making)
Pairing
Connection
Disconnection
5
Tap [THIS IS MY WATCH].
• The watch displayed on the screen may look different from the actual one you use.
• Tap [I DON’T SEE MY WATCH] when not only its color but whole appearance
looks different from yours.
• When update of the watch has started, wait until it is finished.
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6
Within the time limit, press and hold the right middle button B on the
watch.
Pairing starts.
When pairing finished successfully
The screen of finish is displayed.
CITIZEN YF05 Instruction manual
About synchronization
Once paired, the watch and the smartphone are connected and synchronize their
data automatically start as the dedicated app is started or displayed.
• All the hands of the watch turn fully around when synchronization starts.
• It may take a certain period of time for data synchronization.
• Some operations of the app such as change of settings are accompanied with data
synchronization.
Swiping down the [Home] screen also starts data synchronization.
Swipe
To start pairing on the screen of the app
When pairing was canceled, tap the [PAIR YOUR WATCH] button or [+ ADD]
button on the [Profile] screen of the app.
Time reception
This watch receives time information from your smartphone at every connection
and adjusts the time and calendar automatically.
The activity monitor
This watch is equipped with the activity monitor for measuring and recording your
activity. When you achieve the activity goal you set on the app, the watch vibrates
to notify achievement. In addition, you can check the history of your activity on the
dedicated app.
• Activity data recorded in the watch is transferred to the dedicated app when the
watch and the smartphone are connected to synchronize data and it is stored in the
app.
• The watch keeps up to about 40-day data of activity.
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