Citizen Eco-Drive 8637 User manual

INSTRUCTION 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

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

Environment

Charging

Environment

Illumination(lx)

ChargingTime(approximate)

Chargingtime

requiredto

maintainnormal

operationfor

1day

Chargingtime

requiredto

returntonormal

operationafter

thewatchstops

Timerequired

toreachfull

chargingafterthe

watchstops

Direct sunlight

(Outdoors) 100,000 2 minutes 50 minutes 13 hours

Cloudy (Outdoors) 10,000 10 minutes 5 hours 35 hours

Less than

20 cm from 30 W

fluorescent light

3,000 35 minutes 17 hours 120 hours

Indoor 500 3.5 hours 120 hours 800 hours

English

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).

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.

English

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

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

purchased.

Hour

hand

Day

hand

Second

hand

24 hour

hand

Minute hand

Date hand

Crown

Normal position (

)

Position 1 (

)

(Setting the date)

Position 2 (

)

(Setting the time

and day)

NameofComponents

English

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.

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 (

) in sync with a

reliable time source.

•The24hourhandmovestogetherwiththehour

hand and minute hand

English

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 (

) 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.

Table of contents

Popular Watch manuals by other brands

Pandora

Pandora WATCH2 quick guide

Casio

Casio QW-4343 Service manual

Suunto

Suunto X6 user guide

Seiko

Seiko N830 instruction manual

MotionX

MotionX 365 user guide

Garmin

Garmin VENU SQ 2 owner's manual

QCY

QCY Watch GTC manual

Canyon

Canyon Cindy CNE-KW41WP quick guide

Esq

Esq Watches Operating instructions warranty & service guide

Crane

Crane AA5-CDSM-3A user manual

Timex

Timex W-214 product manual

DETOMASO

DETOMASO MATERA manual

Geemarc

Geemarc Watch N Shake user guide

LORUS

LORUS W590 instruction manual

STENLILLE

STENLILLE Actío user manual

Casio

Casio 5594 Operation guide

Sinn

Sinn HUNTER'S WATCH 3. Edition manual

Slazenger

Slazenger SLZ800 manual