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Indication of power reserve in level

Level

4

3

2

1

0

Indication

Duration 

(approx.)

24 -

19 months

19 - 

14 months

14 -

5 months

5 months - 

5 days

5 days or 

shorter

Meaning

Power 

reserve is 

sufficient.

Power reserve is OK.

Power 

reserve is 

getting low.

Insufficient 

charge 

warning 

has started.

OK for normal use

Charge immediately.

Indication of power generation amount in level

The level of power generation amount means power being generated by 

the solar cell represented in 7 levels (0 - 6).

Level

6

5

4

3

2

1

0

Indication

Meaning

Sufficient power 

generation for 

charging.

Charge in a brighter location where the 

level of power generation amount reaches 

“5” or “6”.

3. 

Press and release the upper right button 

 to finish checking.

Checking the reference position

1. 

Pull the crown out to position 

2

.

2. 

Press and hold the lower right 

button 

 for 4 seconds.

Correct reference positions: 

• All hands: 12 o’clock position

• Date indication: midway between 31 

and 1

• Day: S (Sunday)

3. 

Push the crown in to position 

0

 and press and release the 

lower right button 

 to finish checking.

Correcting the reference position

1. 

Pull the crown out to position 

2

.

2. 

Press and hold the lower right button 

 for 4 seconds.

3. 

Press and release the lower right button 

 repeatedly to 

change the hand/indication to be corrected.

• Each time you press the button 

, the target changes as follows:  

Date/day → hour hand → minute hand → second hand → (back to the 

top)

4. 

Rotate the crown to adjust the hand/indication.

• When you rotate the crown quickly a few times, the hand/indication 

will move continuously. To stop the rapid movement, rotate the crown 

in either direction.

5. 

Push the crown in to position 

0

.

6. 

Press and release the lower right button 

 to finish the 

procedure.

Resetting the watch — All Reset

1. 

Pull the crown out to position 

2

.

2. 

Press and hold buttons 

 and 

 at the same time for 3 

seconds or more and release them.

As you release the buttons, the hands move slightly to indicate that reset 

completed.

After All Reset

After All Reset, adjust the reference position. Execute world time setting and 

receive satellite signal manually to adjust the time and calendar after that.

F150 Abbreviated instruction

CITIZEN WATCH CO., LTD.

Checking the power reserve and power generation amount

1. 

Push the crown in to position 

0

.

2. 

Press and release the upper right button 

.

The power reserve and power generation amount at the moment of 

pressing the button 

 are indicated in levels.

“Month” corresponds to one of the 12 

zones shown in the figure below.

Each number means month.

“Year” corresponds to the years 

since leap year and is indicated with 

markers in the zone of each month.

12

1

2

3

4

5

6

7

8

9

10

11

Years since leap year: 

0

(Leap year)

0

Years since leap year: 

1

1

Years since leap year: 

2

2

Years since leap year: 

3

3

Checking and adjusting leap second setting

• The leap second setting can be adjusted by executing leap second reception.

You can find a list of leap seconds at the homepage of IERS 

(INTERNATIONAL EARTH ROTATION & REFERENCE SYSTEMS 

SERVICE).  

http://hpiers.obspm.fr/eop-pc/earthor/utc/TAI-UTC_tab.html

1. 

Pull the crown out to position 

2

.

2. 

Press and hold upper right button 

 for 2 seconds or more.

Using the “0:00:00” position as the starting point, the minute and second 

hands indicate the leap second setting.

When the leap second setting is 

“−36 seconds”

When the leap second setting is 

“−65 seconds”

The hands point to “0 minute 

36 seconds”.

The hands point to “1 minute 

5 seconds”.

3. 

Turn the crown to adjust the setting if the leap second is not 

correct.

• Adjustable range is from 0 to ‒90 seconds.

4. 

Push the crown in to position 

0

 to finish the procedure.

Adjusting the time and calendar manually

1. 

Pull the crown out to position 

1

.

2. 

Press and hold the upper right button 

 until the second 

hand points to 30 seconds.

3. 

Pull the crown out to position 

2

.

The second hand points to 0 second.

4. 

Press and release the lower right button 

 repeatedly to 

change the hand/indication to be corrected.

• Each time you press the button 

, the target changes as follows.  

Minute hand → hour hand → date → year/month → day → (back to the 

top)

5. 

Rotate the crown to adjust the hand/indication.

• Date indication changes to the next as the function hand rotates 5 

times.

• When you rotate the crown quickly a few times, the hand/indication 

will move continuously.

• To stop the rapid movement, rotate the crown in either direction.

6. 

Push the crown in to position 

0

 in accordance with a 

reliable time source to finish the procedure.

Month and year indications

Set the year and month with the position of the second hand.

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