Citizen BTOSeries Manuale utente

English

The date window—

large and highly visible

The calendar—no date correction

at the end of months (→page 13)

Solar-powered and no battery

replacement (→page 9)

Features

Table of contents

Part names and their main functions .............................................................. 4

How to use the screw down crown ...................................................................... 5

When leaving the watch unused for an extended period of time .................... 5

Charging the battery .......................................................................................... 6

Charging the battery .............................................................................................. 6

When the battery becomes short of power

—Insufficient charge warning function ........................................................... 7

Charging time......................................................................................................... 8

After the battery is fully charged

—Overcharge prevention function................................................................... 9

Eco-Drive ................................................................................................................ 9

Setting the time ................................................................................................. 10

Checking the date, month, and year ............................................................. 12

Perpetual calendar................................................................................................ 13

Setting the year, month, and date ................................................................. 14

Precautions......................................................................................................... 22

English

• The second hand moves only once every two seconds.

• All hands stop moving.

• The figures are not displayed upright.

• The date is wrong.

• The date changes to the following day at around noon.

• The watch does not work properly.

• The watch does not move even if the battery is fully charged.

Troubleshooting..............................................................................................30

Checking and correcting the reference position......................................... 32

Resetting the watch .......................................................................................... 36

Maintenance....................................................................................................... 38

Specifications ..................................................................................................... 39

Button A:

For setting the date etc.

Part names and their main functions

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

Hour hand

Minute hand

Button B:

For setting the

calendar-related functions

Crown:

For setting the time, checking

the date, etc.

Press HERE.

Example of a button

Date

24-hour hand:

Goes around once

a day

Second hand

English

7How to use the screw down crown

To release the crown

7When leaving the watch unused for an extended period of time

Pull out the crown to position .

All hands stop moving and the battery power is

saved.

• The date will change to the following day every

24 hours once you have pulled out the crown to

position .

Turn the crown to the left until it pops out slightly.

To lock again

Tighten the crown completely by pressing and turning

it to right.

Charging the battery

7Charging the battery

This watch has a battery which is charged by exposing the dial to light such as

direct sunlight or fluorescent lamps.

To obtain the best performance:

• Expose the dial to direct sunlight at least once a month.

• After taking off the watch, put it where 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, fully

charge the battery.

When the watch is covered with long sleeves, for example, the battery may not

be charged sufficiently. Try to keep the watch exposed to light.

Do not charge the battery at a high temperature (about 60˚C/140˚F or

higher).

English

7When the battery becomes short of power—Insufficient charge

warning function

• After the battery is charged for a while, the

second hand will move normally.

• If you have not charged the battery for three

days or more since the warning movement

began, the battery will run out and the watch

will stop.

When the battery becomes short of power, the second hand moves once

every two seconds—insufficient charge warning function. Charge the

battery by exposing the dial to light.

NOTICE:

You c an not check or adjust the settings while

the warning movement continues, though

you can see the time.

The two-second

interval movement

7Charging time

Below are the approximate values when exposing to the light continuously.

The charging time differs depending on the color of dial or other conditions.

Use the table below only for your reference.

Illuminance

(Lx) Environment

Charging time to

work for one day

(approx.)

Charging time to start

working normally when the

battery is empty (approx.)

500 Interior lighting 4 hours 60 hours

1,000 60-70 cm (24-28 in.) under a

fluorescent lamp (30 W) 2 hours 25 hours

3,000 20 cm (8 in.) under a fluorescent

lamp (30 W) 40 minutes 7.5 hours

10,000 Under cloudy weather 11 minutes 2.5 hours

100,000 Under direct sunlight in summer 2 minutes 45 minutes

Battery duration after full charging (without further charging) About 12 months

Charging the battery

English

This watch has the ”Eco-Drive” system, which

converts light into electrical energy with the solar cell

beneath the dial.

The system makes you free from care of battery

replacement and is environment-friendly because of

no battery disposal.

Time for charging fully

when the battery is

empty (approx.)

—

70 hours

35 hours

7After the battery is fully charged—

Overcharge prevention function

After the battery is fully charged, charging

automatically stops to prevent overcharging, which

may damage to the battery, or affect the accuracy,

functions, and performance of the watch.

Eco-Drive

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