Citizen 8635 User manual

English

Notes Before Use• ...................................................2

Notes on charging your watch..........................................2

Your Watch• ..............................................................4

Name of Components• ............................................6

About the crown ...............................................................7

Setting the Time and Calendar• .............................8

1) Setting the time and day ..............................................8

2) Setting the date..........................................................10

Troubleshooting• ...................................................13

Precautions• ...........................................................14

Specifications• .......................................................24

Table of Contents

2 3

English

Notes on charging your watch

This watch has a rechargeable cell which is charged by

exposing the dial to light such as direct sunlight or fluorescent

lamps.

Notes Before Use

For optimal performance

Expose the watch with the dial towards direct sunlight for several hours at least•

once a month.

After taking off the watch, put it in a position so that the dial is exposed to•

bright light, such as by a window.

Before storing the watch in a dark place for an extended period of time, be sure•

to charge it fully.

When the watch is regularly covered with long sleeves, it may not be charged

sufficiently. Try to keep the watch exposed to light sufficient for charging.

Do not charge the watch at a high temperature (about 60°C/140°F or higher).

4 5

English

Eco-Drive (solar

powered) watch

The watch operates by

converting sunlight and other

light into electrical energy.

Once the rechargeable cell is

fully charged, the watch will

function for approximately

6 months.

Your Watch

Insufficient charge warning

If the power becomes

very low, the second hand

advances at 2-second

intervals, indicating that

charging is necessary.

When the second hand

starts to advance at

2-second intervals, expose the watch to light

until it is fully charged.

If the watch is not exposed to light within

approximately 4 days after the insufficient

charge warning starts, the watch will stop.

Quick start function

When the stopped watch is exposed

to light, it starts operating again

immediately.

After quick start, expose the watch to

light until it is fully charged. Set the

correct time before using the watch.

Overcharging prevention

function

Once the watch is fully charged, an

overcharging prevention function will

automatically activate so that it is not

charged any further.

No matter how much the watch

is charged, it will not affect the

rechargeable cell, time accuracy,

functions or other performance.

012

6 7

English

The illustrations shown in this manual may differ from the actual watch you have

purchased.

Hour

hand

Second

hand

Day

hand

Date hand

Minute hand

Crown

Normal position ( 0)

Position 1 ( 1)

Setting the date

Position 2 ( 2)

Setting the time

and day

Name of Components

About the crown

Some models use screw down system for the crown. Accidental operations can be

prevented when the watch is not being operated by locking the crown. To operate

the watch, release the lock.

Before operation After operation

Unlock the crown

Rotate the crown to the left

(counterclockwise).

Lock the crown

Press the crown and rotate it to

the right (clockwise) to tighten the

screw lock.

When the screw lock is released, the

crown extends to the normal position.

8 9

English

Setting the Time and Calendar

1) Setting the time and day

Pull out the crown Set the day Set the time Return the crown

With the second hand in

the 0-second position, pull

the crown out two ‘steps’ to

position 2.

Rotate the crown to the right (clockwise)

to set the day. (The day hand moves when

the hour hand is indicating between 0 a.m. and

5 a.m.)

Rotate the crown to set the time,

paying attention to a.m. and p.m.

Return the crown to the normal

position ( 0) in sync with a

reliable time source.

The day hand advances together with the hour hand and minute hand, so set the

day first, and then set the time.

Setting the Time and Calendar

English

2) Setting the date

Pull out the

crown Set the date Return the

crown

1 0

Pull the crown

out one ‘step’ to

position 1.

Rotate the crown to the left

(counterclockwise) to set the

date. (The date does not change

when you rotate the crown to the

right (clockwise).)

Return the crown

to the normal

position ( 0).

Note

About the screw down crown

Release the screw lock before rotating the crown to set the time and

calendar. After setting the time and calendar, be sure to press and rotate

the crown to tighten the screw lock (p.7). If your watch does not have

a screw down crown, operations can be performed without locking or

unlocking the crown.

Setting the day

The day hand moves when the hour hand is indicating between 0 a.m.

and 5 a.m. Pay attention to a.m. and p.m. when setting the time.

Setting the date

Do not change the date while the hour hand is indicating between 9 p.m.

and 1 a.m. If you change the date during this time, the date may not

change the following day.

Setting the Time and Calendar

English

Tips

Setting the time

When setting the time, determine a.m. and p.m. by the time period•

when the day hand moves.

Advance the minute hand by 4 or 5 minutes past the correct time,•

and then return it to the correct time in order to set the time more

accurately.

Setting the date

The date has a 31-day cycle. Re-set the correct date at the start of

March, May, July, October and December.

Problem Cause and remedy

The second hand moves at

2-second intervals.

The watch has stopped.

The charge is insufficient.

Charge the watch until the second hand moves

at 1-second intervals (p.2).

The day and date change

around noon.

The a.m. and p.m. are reversed.

Set the correct time (a.m. or p.m.), paying

attention to the time period when the day hand

moves (p.8, 11).

The second hand does not

move at 1-second intervals,

even when the watch is

charged.

The watch does not operate

even when charged.

The watch stops soon even

when charged.

Contact your dealer or Citizen Service Center.

Troubleshooting

WARNING

Water-resistance

performance

There are several types of•

water-resistant watches, as

shown in the following table.

The unit “bar” is roughly equal

to 1 atmosphere.

For correct use within the•

design limits of the watch,

confirm the level of water-

resistance of your watch, as

indicated on the dial and case,

and consult the table.

14 15

English

Precautions

Indication

Specifications

Examples of use

Minor exposure to

water (washing face,

rain, etc.)

Moderate exposure

to water (washing,

kitchen work,

swimming, etc.)

Marine sports

(skin diving)

Scuba diving

(with air tank)

Operation of the

crown or button with

moisture visible

Dial Case

(case back)

WATER RESIST or

no indication WATER RESIST(ANT) Water-resistant to

3 atmospheres OK NO NO NO NO

WR 50 or

WATER RESIST 50

WATER RESIST(ANT)

5 bar or WATER

RESIST(ANT)

Water-resistant to

5 atmospheres OK OK NO NO NO

WR 100/200 or

WATER RESIST

100/200

WATER RESIST(ANT)

10bar/20 bar or WATER

RESIST(ANT)

Water-resistant to

10/20 atmospheres OK OK OK NO NO

* WATER RESIST(ANT) xx bar may also be indicated as W.R. xx bar.

Precautions

English

WARNING Water-resistance performance

Water-resistance for daily use (to 3 atmospheres): This type of watch is water-•

resistant to minor exposure to water. For example, you may wear the watch while

washing your face; however, it is not designed for use underwater.

Upgraded water-resistance for daily use (to 5 atmospheres): This type of watch•

is water-resistant to moderate exposure to water. You may wear the watch while

swimming; however, it is not designed for use while skin diving.

Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of watch•

may be used for skin diving; however, it is not designed for scuba or saturated diving

using helium gas.

CAUTION

Be sure to use the watch with the crown pressed in (normal position). If your watch•

has a screw down crown, be sure to tighten the crown completely.

Do NOT operate the crown or button with wet fingers or when the watch is wet.•

Water may enter the watch and compromise water-resistance.

If the watch is used in seawater, rinse with fresh water afterward and wipe with a dry•

cloth.

If moisture has entered the watch, or if the inside of the crystal is fogged up and does•

not become clear within a day, immediately take the watch to your dealer or Citizen

Service Center for repair. Leaving the watch in such a state will allow corrosion to

form inside.

If seawater enters the watch, place the watch in a box or plastic bag and immediately•

take it in for repair. Otherwise, pressure inside the watch will increase, and parts

(crystal, crown, buttons, etc.) may come off.

Table of contents

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