Citizen BN7020-09E User manual

取扱説明書

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.

Safety precautions — IMPORTANT

This manual may contain certain safety advisories. Your watch should be used in

accordance with these advisories at all times to ensure optimal enjoyment of your watch

and to prevent injury to yourself, other persons and/or damage to property. Understand

the meaning of the following symbols and read pages from 28 to 39.

■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

■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.

Features

Water resistant construction capable of withstanding a depth of 1,000 m (water pressure

equivalent to 100 atm)

• This watch features enhanced water resistance that enables it to withstand saturation

diving using helium gas.

Equipped with a helium escape valve for discharging helium gas

• In saturation diving, when decompressing to surface pressure in a diver decompression

chamber, the helium escape valve in the watch automatically discharges the helium gas

that has seeped into the watch to improve safety.

Rotating bezel with reverse rotation prevention mechanism to prevent incorrect operation

• The rotating bezel, which is important for checking diving time, employs a reverse

rotation prevention mechanism that prevents the rotating bezel from being rotated

inadvertently.

Request to customers

All parts of this watch, except for the band, are to be repaired only at CITIZEN.

This is because special technologies and equipment are required to perform repairs,

inspections and adjustments. Please make requests for repairs to an authorized service

center when having your watch repaired.

CONTENTS

Before using this watch ....................................................................6

Band adjustment............................................................................................................. 7

Protective stickers............................................................................................................ 7

How to use a specially designed crown............................................................................ 8

Component identification.................................................................9

Helium escape valve.....................................................................................................10

Charging your watch...................................................................... 11

When the watch reaches a low charge state (insufficient charge warning function) ....12

Charging time by environment.....................................................................................13

Checking the current power reserve................................................ 14

Before diving ................................................................................ 16

Cautions while diving .................................................................... 17

Maintenance after diving .............................................................. 18

Setting the time............................................................................ 20

Adjusting the calendar .................................................................. 21

Using the rotating bezel ................................................................ 22

Adjusting the length using the extension band ............................... 26

Troubleshooting............................................................................ 27

Eco-Drive watch handling precautions ............................................ 28

Water resistance ........................................................................... 30

Precautionary items and usage limitations..................................... 32

Warranty and service..................................................................... 40

Specifications................................................................................ 42

CONTENTS

Before using this watch

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

Check the power reserve indication. (page 14)

Charge immediately if the power reserve level is “0” or “1”.

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 11 to 15.

Band adjustment

Do not adjust the length of the band (metal or rubber) yourself. If you fail to

perform the work properly, the watch may fall off, or an injury may occur during

adjustment.

For band adjustment, consult the shop where you purchased the watch or an

authorized service center. Other shops may not be able to handle the watch, or may

charge a fee.

Protective stickers

Be sure to remove any stickers covering the metal parts (back cover, band, clasp)

or glass of the watch before use. 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.

Before using this watch

How to use a specially designed crown

This watch is equipped with a specially designed crown to prevent accidental operation.

Screw down crown

Unlock the crown prior to operate your watch.

Unlock Lock

Screw

down

crown

Rotate the crown

counterclockwise until it

releases from the case.

Push the crown in and

rotate it clockwise until the

orange warning color is no

longer visible.

• Depending on the model, the warning color may differ or there may be no warning

color.

Note

• A screw down locking crown is employed to enhance the water resistance of the

watch. When operating the crown, first rotate it counterclockwise to disengage the

screw lock. Once you have finished operating the crown, always make sure to return

the crown to the normal position and then rotate it clockwise while pushing it in so

that the screw lock is securely engaged.

Before using this watch

Component identification

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

your watch.

• A solar cell is placed under the dial.

Hour hand Minute hand

Second hand

Power reserve

indication hand Crown

Date indication

Helium escape valve

Bezel lock

Rotating bezel

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