Citizen Eco-Drive B6 Series User manual

INSTRUCTION MANUAL

1
English
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.
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.
Engraving position example
The engraving position may
differ depending on watch
model.

2
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 24 to 37 ) 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.

3
English
■ 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.
Safety precautions

4
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.
Precautions to be taken when diving
Safety precautions

5
English
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.
- 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 too 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.
Safety precautions

6
Contents
Features ..............................................
7
Before using this watch .................................
8
Component identification ..............................
11
Charging your watch ...................................
12
Setting the time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
Setting the date.......................................
17
Using the Chronograph.................................
18
Using the rotating bezel................................
22
Eco-Drive watch handling precautions....................
24
Water resistance ......................................
28
Precautionary items and usage limitations. . . . . . . . . . . . . . . .
30
Specifications.........................................
38

7
English
■Water-resistant to 200m
• This watch is a scuba diver’s watch (water-resistant to 200m). You can use it
for scuba diving with air tanks, but must not be used in a helium-enriched
atmosphere (e.g. saturation diving).
■Eco-Drive
• No need for periodical changing of rechargeable cells. The watch is charged by
light.
■Chronograph
• Measures the elapsed time up to 60 minutes.
Features

8
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.
Before using this watch

9
English
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.
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.

10
Before using this watch
How to use a specially designed crown/push button
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 to the
case. With gentle pressure
towards the case, rotate the
crown clockwise to secure
it to the case. Be sure to
tighten firmly.
Screw down
push button
Rotate the
locking screw
counterclockwise, and
loosen until it stops.
Rotate the locking screw
clockwise, and tighten
firmly.
CAUTION
Some models are equipped with a screw down crown and/or screw down push
button to improve waterproof performance. Unlock the crown by rotating
the crown or the button counterclockwise prior to operate your watch. After
operation, push the crown in to the case and then rotate the crown clockwise
while gently pressing the crown towards the case. Be sure to tighten firmly. The
screw down push button should also be rotated clockwise to be tightened firmly.

11
English
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.
Minute hand
1/5 chronograph second hand
Chronograph minute hand
Hour hand
24-hour hand
Second hand
Crown
Date indicator
Button Ⓑ
Button Ⓐ

12
Charging your watch
This watch uses a built-in rechargeable cell to store electrical
energy. Charge the watch by exposing the dial to light such as
direct sunlight or fluorescent lamps.
To ensure optimal operation, be sure to perform the following:
• Charge the watch in direct sunlight (outdoors) once a month
for 5 to 6 hours.
• When you take your watch off, be sure to place it in a location
where the dial can receive light. An ideal location might be a
window sill where it can receive direct sunlight.
• Avoid leaving it in a dark places for long periods of time.

13
English
Charging your watch
CAUTION
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).

14
Charging your watch
Quick start function
When the stopped watch is exposed to light, it starts operating again immediately.
• Be sure to keep your watch fully charged when utilizing this feature.
• Adjust the time and calendar after fully charged. (page 16)
CAUTION
• When the watch is operating in the two-second interval mode (low power/
insufficient charge warning), you cannot operate chronograph.
If the reserve power becomes insufficient
(Insufficient Charge Warning Function)
When the rechargeable cell charge reaches a low
power state, the Insufficient Charge Warning
Function engages. This cause the second hand to
move in two-second intervals (two-second interval
movement). Be sure to immediately fully charge
your timepiece by exposing it to light.
•Two-second interval movement continues for some 7 days until the watch stops completely due
to battery depletion.

15
English
Charging your watch
Charging time by environment
Below are the approximate charging times when exposing to light continuously.
Please use this table as a general reference only.
Environment Illuminance
(lx)
Charging time (approx.)
To work for one day To start working normally when the
cell is discharged
To become fully
charged when the cell
is discharged
Outdoors (sunny) 100 000 2 minutes 25 minutes 8.5 hours
Outdoors (cloudy) 10 000 11 minutes 3.5 hours 45 hours
20 cm (7-7/8 inches)
from a fluorescent
lamp (30W) 3 000 35 minutes 11 hours 150 hours
Interior lighting 500 3.5 hours 80 hours −
• This watch wil run for approximately 7 months from a full charge without further exposure to light.
• The time is calculated with the chronograph used 60 minutes per day. If the chronograph is
used longer than that, the time shortens.

16
1Pull the crown out to position 2.
Pull out the crown just as the second hand is at the reference
position in order to accurately align to the second.
2Rotate the crown to adjust the time.
• Move the minute hand ahead of the correct time by 5
“minutes” and then return the hand to the correct “minutes”.
This will minimize the effect of gear play and will provide
more accurate hand movement.
• The 24-hour hand (located at the 9:00 subdial) moves in
relation to the hour hand. Determine whether it is a.m. or
p.m. by observing the 24-hour hand.
3Push the crown in to position 0to finish the
procedure.
Setting the time
Make sure that the watch is not wet before operating the crown or any buttons.

17
English
Setting the date
1Pull the crown out to position 1.
2Rotate the crown counterclockwise to set the date.
• The date does not change when you rotate the crown
clockwise.
3Push the crown in to position 0to finish the
procedure.
The date must be manually adjusted for months shorter than 31-days. You will
need to adjust the date at the start of March, May, July, October and December.
• Do not adjust the date between 9 p.m. and 1 a.m. If you change the date during
this time, the date may not change the following day.
Make sure that the watch is not wet before operating the crown or any buttons.

18
Using the Chronograph
Make sure that the watch is not wet before operating the crown or any buttons.
The 1/5 chronograph second hand is normally placed at 12 o’clock position. Once
the measurement starts, it can move every 0.2 seconds and measure for 60 minutes.
1/5 Chronograph second hand
Chronograph minute hand Reference position
Button
Ⓑ
Button
Ⓐ
CAUTION
The chronograph minute hand /1/5 chronograph second hand may be displaced
from the reference position if the watch receives a strong impact.
• The illustrations in this instruction manual may differ from the actual
appearance of your watch.

19
English
Using the Chronograph
Time measurement start/stop
1To start the chronograph, press and release the upper right button Ⓑ
to commence time measurement.
2To stop the chronograph, press and release the upper right button Ⓑ
again.
3To recommence timing from the stopped position, press and release
the upper right button Ⓑagain.
Reset
To reset the chronograph after stopping time measurement, press and release the
lower right button Ⓐ.
• Pressing and releasing the lower right button Ⓐduring chronograph operation
will cause timing to stop and the chronograph to reset.
• The chronograph does not function if the crown is pulled out to position 2.
The chronograph resets if the crown is pulled out to position 2during measurement.