Citizen F158 Setting Guide

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.

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.

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 86 - 99) 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

Safety precautions — IMPORTANT

■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

Precautions to be taken when diving

PROHIBITED Do not use this watch while diving when...

• Do not use your watch while diving when the watch stops or exhibits any abnormal operation.

CAUTION Diving with the watch

•Persons using the diver’s watch are strongly recommended to receive proper instruction and training pertaining to diving and observe those rules at all times.

•Please use this watch properly only after you fully understand the operating procedures and cautions.

Using this watch other than as indicated in this instruction manual may result in failure of the watch to function properly.

•Check the water-resistant indications on the watch face or the case back. Never dive beyond the indicated depth.

CAUTION

Before diving

•Check items below before diving

-Check to see if the watch is sufficiently charged and the insufficient charge warning (2-second interval movement) is not activated.

-Make sure that the watch is running correctly (check the movements of the time/calendar/ second hand)

-Check to see if the crown is properly pushed in and the screw down push button is securely locked.

4

Precautions to be taken when diving

-Make sure that the band is firmly anchored to the watch body.

-Make sure that there are no cracks or other damage to the watch band or the glass face.

-Make sure that the register ring rotates properly.

CAUTION

During diving

•Do not push any push buttons or pull out the crown in the water. Operating any of them in water may cause trouble including deterioration of water resistance.

•Be careful not to hit the watch against hard objects such as equipment or rocks.

CAUTION

After diving

•Check to see if the crown is pushed in and the screw down push button is locked before removing the sea water, dirt, and sand attached to the watch with fresh water. Then, wipe the fresh water.

5

Features

Satellite Wave-GPS

Receives location and time information sent from GPS satellites and adjusts the time and calendar on the watch automatically.

200 m water resistant watch for diving

This watch has 200 m water resistance and can be used for

air diving with an air tank (SCUBA diving). (You cannot use it for saturation diving using helium gas.)

It conforms with the standard of ISO 6425: 2018.

Diving mode

It prevents wrong operation of the watch during diving; it also halts some functions such as satellite signal reception to keep the current time indicated.

Eco-Drive

No periodical battery replacement is needed. This watch is fueled by light.

6

Features

Light-Level Indicator

Indicates current power generation amount.

It can be used as a reference for choosing a good charging place.

World time

Indicates the time around the world by choosing one of 38 time zones.

±5-second average monthly accuracy

Keeps high accuracy without time signal reception.

Perpetual calendar

No need for monthly and leap-year date correction until February 28, 2100.

* “Eco-Drive” is an original technology of Citizen.

7

CONTENTS

Precautions to be taken when diving . . . . . . . . . . . . . . . .	. 4
Before using this watch. . . . . . . . . . . . . . . . . . . . . . . . . . .	12
Band adjustment........................................	13
Protective stickers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
How to use a specially designed crown/button...........	14
Component identification. . . . . . . . . . . . . . . . . . . . . . . . .	16

Checking the power reserve and power generation amount. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Checking the reception result of the satellite signal.. . . 24

8

CONTENTS

Setting the world time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Checking the current time zone setting.. . . . . . . . . . . . . . . . . . 27 Obtaining location information from satellite signals.. . . . . 34 Setting the time zone manually.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 36

Receiving time information . . . . . . . . . . . . . . . . . . . . . . . . 37 Switching summer time (DST) and standard time. . . . . 44 Using the diving mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Charging your watch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Continued on the next page	9

CONTENTS

Information on satellite signal reception.. . . . . . . . . . . . 54

Checking and adjusting the leap second setting .. . . . . . . . . 59 Checking and adjusting the rollover number setting.. . . . . 62

Adjusting the time and calendar manually . . . . . . . . . . .	66
Using the rotating bezel . . . . . . . . . . . . . . . . . . . . . . . . . . .	72
Troubleshooting.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	74
Checking and correcting the reference position.. . . . . . . . . .	74
Symptom and remedies.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	78

10

CONTENTS

Eco-Drive watch handling precautions. . . . . . . . . . . . . . . 86 Water resistance.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Precautionary items and usage limitations. . . . . . . . . . . 92 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

11

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 pages 48 -.

• Especially, satellite signal reception is power consuming. Take care.

After unpacking, the following must be done before using the watch:

1Checking the current power reserve (page 20)

2Setting the world time (page 26)

3Receiving the satellite time signal (page 37)

12

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.

Continued on the next page 13

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
		Rotate the crown
	Screw down	counterclockwise
	crown	until it releases
		from the case.
		Rotate the
	Screw down	locking screw
		counterclockwise,
	push button
		and loosen until it
		stops.

Lock

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.

Rotate the locking screw clockwise, and tighten firmly.

14

Before using this watch

Recessed button

Press the button with a non-marring narrow-tipped object.

• Metal objects may cause marring or scratching of the button.

15

Component identification

Hands and buttons

Hour hand

Function hand

Second hand

Minute hand

Button B

Crown

Date indication

Button A

Rotating bezel

16

Component identification

Indication

RX-TME: Reception-in-progress indication (time)

RX-GPS: Reception-in-progress indication (location information)

OK/NO: Reception result indication

S/M/T/W/T/F/S: Day-of-week indication Power reserve indication (in five levels) ON/OFF: Summer time (DST) setting DIVE: Diving mode

Place name/time

									A
								ONH
								OR
								N DL
								DE P
							O
							D
							NO
							I
						AR		O
						N
					R			N
					E
				F
			M	A	O		E
							M
		C				-T
					X
		S N			R
G	O
A
P
A
L
A
G
N
E
D
L
A

X	S
A
N
C

H

A

W

A

I

I

M

D

Y

TBU

LO

N

SHAR	M
P
AR
OK

EL
S
H
R EI
U K
H	H
R	D
		X
X		BM
-			A
G
	P		L
	S			D
				I
				V
				E
				S
				D
				E
				L
			7	D
				K
				A
				C
				<![if ! IE]> <![endif]>T
				E
				U
				H
				P
				S
				J
				B

					T	Y	O
				L
				DF
				AE
				E
				R
				R
				IE
				R
				R
	U			BA
			T
NO		EA
FIJI	GR

•The illustrations in this instruction manual may differ from the actual appearance of your watch.

• A solar cell is placed under the dial.

17

Checking the power reserve and power generation amount

Always care about the current power reserve and charging environment of the watch and charge it sufficiently.

			Indication of power generation
	Indication of power reserve in	0	amount in levels
			1
	levels

S M T W T F S

NO

O

K

R X - G P S

2

ON

OFF

T W T F

7 3

			OFF
0		4			4
1		3
	2
				5
		Function hand	6		Hour, minute and second
					hands

18

Checking the power reserve and power generation amount

Make sure that the watch is not wet before operating it.

1 Push the crown in to position 0.

2 Press and release the upper right button B.

The power reserve and power generation amount at the moment of pressing the button are indicated in level.

• Power reserve level (function hand): page 20

• Level of power generation amount (hour, minute and

second hands): page 22

3 Press and release the upper right button B to finish the procedure.

The hands returns to current time indication.

•They return to current time indication automatically in about 10 seconds.

19

Checking the power reserve and power generation amount

Indication of power reserve in levels

Level	4	3	2	1	0
Indication	See “Indication of power reserve in levels” on page 18.
Duration	24 - 19	19 - 14	14 - 5 months	5 months - 5	5 days or
	months	months		days	shorter
					Insufficient
	Power reserve	Power reserve is OK.		Power reserve	charge
Meaning	is sufficient.			is getting low.	warning has
					started.
	OK for normal use.			Charge immediately.

20

Checking the power reserve and power generation amount

CAUTION

•At the level 0, the second hand starts to move once every two seconds

(insufficient charge warning function, page 50). Some functions become unavailable while this function is activated. For details, see page 51.

•The function hand points to “OFF” and does not indicate the level of power reserve when temperature of the watch is too high or too low. (non-chargeable state)

Check it again at a location of suitable temperature.

21

Checking the power reserve and power generation amount

Indication of power generation amount in levels

The level of power generation amount means power being generated by the solar cell represented in 7 levels (0 - 6).

Level	6		5	4	3	2	1		0
Indication	See “Indication of power generation amount in levels” on page 18.
	Sufficient power			Charge in a brighter location where the level of
Meaning	generation for
				power generation amount reaches “5” or “6”.
	charging.

22

Checking the power reserve and power generation amount

CAUTION

•The level of power generation amount indicated is that of the moment you operate the watch for its indication. The level indication does not reflect change of the level after your operation.

•The level may vary even under the same brightness due to the entry angle of light to the dial of the watch or other elements. The level may also vary depending on difference of models.

•The light level indication of “6”, indicates light being received is equivalent to a cloudy outdoors (about 10,000 lux illuminance) or a brighter location.

•Use the level of power generation amount as a general reference only.

23

Checking the reception result of the satellite signal

Make sure that the watch is not wet before operating it.

1 Push the crown in to position 0.

2 Press and release the lower right button A.

The previous reception result is indicated.

OK

NO

ONHA LON	SH	ARM
OR
NPDL	PAR
NO	OK

EL
SH	EI
R
UHKH
R		D
		X
X		B
	-
	G
	P
	S

Reception was successful.

M

					HA
					RON
					NO L
					DE PD
				DO
				ANIO	O
			N R
		R			N
FE
A	O			E
				M
			-T
		X
		R

LO

N

SHARM

PAR

OK

Reception failed.

•The indication shows the result of the last reception, regardless types of received information, or information of location or time.

24

Checking the reception result of the satellite signal

3 Press and release the lower right button A to finish the procedure.

The hands returns to current time indication.

•They return to current time indication automatically in about 10 seconds.

About the reception result

The previous reception result is stored for 6 days and “NO” is indicated after that.

25

Setting the world time

This watch can indicate the time around the world according to which of 38 time zones (offsets from UTC — Coordinated Universal Time) is chosen.

You can set offsets from UTC through any of the two ways below.

How to set	What to set
Obtaining location information	A time zone is set automatically and time and calendar
from satellite signals	are adjusted based on the chosen zone. (page 34)
Setting the time zone manually	A time zone is chosen manually. (page 36)

•Summer time (DST) information is not contained in the satellite signal. Adjust the setting manually before and after the summer time (DST) period. (page 44)

26

Setting the world time

Checking the current time zone setting

Make sure that the watch is not wet before operating it.

1 Pull the crown out to position 1.

The second hand indicates the current world time setting and the function hand indicates the current summer time (DST) setting.

• See also “How to read indication of the world time setting”

(page 28) and “Table of time zones and representative areas” (page 29).

2 Push the crown in to position 0 to finish the procedure.

The second hand returns to indicate the second.

27

Setting the world time

How to read indication of the world time setting

The watch has 38 time zone markers with several representative area names. A time zone is set by pointing the second hand at one of the markers.

	Time zone marker
								D
				7				A
								C
								<![if ! IE]> <![endif]>T
								E
								K
								U
Second								H
								P
								S
hand
								J
								B
					T	Y	O
				L
				DF
				AE
				E
				R
				R
				IE
				R
				R
	U			BA
			T
TBU	NO	EA
	FIJI GR
				Representative area

On the illustration in the left, the second hand points to 21 seconds and time zone setting is “+9”.

•Time zones are represented by offsets from UTC.

•Time zone markers and area names may differ from the illustration in some models.

28

Setting the world time

Table of time zones and representative places

•Countries or regions may change time zones for various reasons.

•The offsets in the table are based on the standard time.

	Time zone	Second	Area name	Representative area
		hand
	0	0	LON	London
	+1	2	PAR	Paris
	+2	4	SHARM EL SHEIKH/	Sharm El Sheikh, Athens
			SSH
	+3	6	RUH	Riyadh
	+3.5	7	—	Tehran
	+4	8	DXB	Dubai
	+4.5	9	—	Kabul
	+5	10	MALDIVES/	Maldives, Karachi
			MLE

29

Setting the world time

	Time zone	Second	Area name	Representative area
		hand
	+5.5	12	DEL	Delhi
	+5.75	13	—	Kathmandu
	+6	14	DAC	Dhaka
	+6.5	15	—	Yangon
	+7	16	PHUKET/HKT	Phuket, Bangkok
	+8	18	BJS	Beijing/Hong Kong
	+8.75	20	—	Eucla
	+9	21	TYO	Tokyo
	+9.5	23	ADL	Adelaide
	+10	25	GREAT BARRIER	Great Barrier Reef, Sydney
			REEF/—
	+10.5	26	—	Lord Howe Island

30