Citizen JS55 User manual

< Time Standard >
Type of quartz:
Tuning fork type quartz crystal
Frequency : 32,7 8Hz
Accuracy :
±
±±
±
20 second / month
worn under normal circumstances
< Balanceable weight of hand >
Minute hand Max. 0.4 µN.m
Second hand Max. 0.09 µN.m
Other small hands Max. 0.02 µN.m
< Function >
Stopwatch 1 sec. basis (Up to 29 min. 59 sec.)
Powercell Saving Reset Mechanism(PSRM)
Over-loading Compensation Device(OLCD)
Digital Frequency Control(DFC) for time adjustment
Ligne
SILVER OXIDE SR 21SW or equivalent
Φ27. ×
××
×2 .0（
（（
（3H-9H)
4.18mm
Battery
Battery Life
Approx.2years
* 30minutes chronograph operation per day
Overall diameter
Φ28.2×
××
×2 .0（
（（
（3H-9H)
Cal. JS20 / JS55
STOPWATCH
12 1/2
×
××
×
JS20 JS55
Calibre
Case fitting diameter
Total height
Date
1. Basic Specification
Stopwatch
Second Hand 24 Hour Hand
Stopwatch
Minutes Hand
Second Hand
24 Hour Hand
Stopwatch
Minutes Hand
Stopwatch
Second Hand
Second Hand

* Measurement of time rate
The unit(gate) time of measurement must be set at "10 sec." or integer fold value of 10 sec. Owing to the
DF system, and the measurement must be performed in the form of complete watch.
* Marking on movement
JAPAN
MIYOTA CO.
( CAL. NO.)
NO JEWELS
* Typical clearance
Mov't - aseback
minimum 150 microns
Top of hands - Glass
300 - 400 microns *
* subject to the glass, case structure, and the length of hand
Thread
Ф
ФФ
Ф0.9mm×
××
×11. 8mm
Setting stem
Length from movement
center to far end of
setting stem
0 5- 505 ×
××
×1
20.03mm
2. Separated Parts
3. Others

【
【【
【
Displays and Buttons
】
】】
】
A) SETTING THE TIME
1. Pull the crown out to the 1st lick Position.
2. Turn the crown to set hour and minute hands.
B) USING THE STOPWATCH
This stopwatch is able to measure and display time in 1/1 second united up to maximum of 30 minutes.
Stopwatch will stop automatically after running continuously for 30 minutes.
【
【【
【
Measuring time with the stopwatch
】
】】
】
1. Press button " A " to start the stopwatch.
2. The stop watch can be started and stopped each time button "A" is pressed.
3. Pressing button "B" resets the stopwatch and stopwatch minute and second hands return to their
Zero positions.
C) STOPWATCH RESET (INCL. AFTER REPLACING BATTERY)
This procedure shoud be performed when the stopwatch second hand does not return to the Zero
second.
1. Pull the crown out to the 1st lick Position.
2. Press the button "A" once to set the stop watch second hand to the Zero position.
* The stopwatch minutes hand is syncronized with stop watch second hand.
* The stopwatch second hand can be advanced rapidly by continuously pressing button "A".
3. Once the hands been zeroed, reset the time and return the crown to its normal position.
These specifications might be changed without prior notice.
4. Instruction Manual
Reset Time
Measurement Stop
"A"
"B"
Stopwatch
Second Hand 24 Hour Hand
Stopwatch
Minutes Hand
Second Hand
Button A
Button B
Normal Position
1st Click Position
"A"
"A"

JS00 JS10 JS20 JS50 JS55
Setting the Date
Push A to reset the hands position to the ZERO position,
And continue to push A to put them forward
Push “A”
Start and Stop the chronograph
Reset the chronograph
Push “B”
12 ½’’’
Size
<ligne>
Height
<mm> 4.18
Accuracy
<per Month> 20 sec
500 pcs
Original
Package
Clearance
Movement
0.3-0.4mm
0.15mm
Hand
case
2 years
*30 minutes chronograph operation per day
Battery
Life
Battery consumption could be minimum
by pulling out the stem (=Power-Saving)
Minute 0.40
Second 0.09
Small 0.02
Balance
Weight
< N.m>
Featured by Shock Detection
Φ28.2
Pusher
SR621SW
Attached
Stem
065-505
CS
Chronograph
Second
24
24 Hour
30
Chronograph
Minute
Parallel
Push Button
Available
24
CS
30
24
CS
30
24CS 30
24
CS
30
JS10JS00
24
CS
30
JS20
JS55JS50
Set CHRONOGRAPH hands to reset

***** CALL.
JS00/50/20/55
MOV'T PARTS LIST *****
ORIGINAL PARTS, MADE IN JAPAN
PART NAME JS00 JS50 JS20 JS55
BATTERY
280-3409
280-3409
280-3409
280-3409
BATTERY CONNECTOR SPRING
231-368
231-368
231-368
231-368
CANNON PINION WITH DRIVING WHEEL
028-A05
028-A05
028-A05
028-A05
CLUTCH WHEEL
064-790
064-790
064-790
064-790
COIL UNIT
246-181
246-181
246-181
246-181
COIL UNIT OR CHRONOGRAPH
246-A05
246-A05
246-A05
246-A05
ELECTRIC CIRCUIT UNIT
279-J99
279-J99
279-J99
279-J99
I TH WHEEL AND PINION
084-700
084-700
084-700
084-700
OURTH WHEEL AND PINION
023-A39
023-A39
023-A39
023-A39
HOUR WHEEL
075-A18
075-A24
075-A18
075-A24
INSULATOR OR BATTERY CONNECTOR SPRING
230-220
230-220
230-220
230-220
INTERMEDIATE DATE CORRECTING WHEEL
087-184
087-184
087-184
087-184
INTERMEDIATE MINUTE-RECORDIMG WHEEL(1)
087-A34
087-A43
087-A34
087-A43
INTERMEDIATE MINUTE-RECORDIMG WHEEL(2)
087-A35
087-A44
087-A35
087-A44
INTERMEDIATE MINUTE-RECORDIMG WHEEL(3)
087-A36
-
087-A36
-
INTERMEDIATE SECOND-RECORDIMG WHEEL (1)
087-A31
087-A42
087-A31
087-A42
INTERMEDIATE SECOND-RECORDIMG WHEEL (2)
087-A32
-
087-A32
-
INTERMEDIATE SECOND-RECORDIMG WHEEL (3)
087-A33
-
087-A33
-
INTERMEDIATE 24HOUR DRIVING WHEEL
087-A37
087-A45
087-A37
087-A45
MINUTE RECORDING WHEEL
291-204
291-206
291-204
291-206
MINUTE WHEEL AND PINION
072-121
072-121
072-121
072-121
ROTOR
285-175
285-175
285-175
285-175
ROTOR OR SECOND CHRONOGRAPH
285-A06
285-A06
285-A06
285-A06
SCREW OR CHRONOGRAPH COIL UNIT
922-166
922-166
922-166
922-166
SCREW OR ELECTRIC CIRCUIT
923-107
-
-
-
SCREW OR ELECTRIC CIRCUIT UNIT
-
923-107
923-107
923-107
SCREW OR TRAIN WHEEL BRIDGE
923-112
923-112
923-112
923-112
SCREW OR ELECTRIC CIRCUIT O CHRONOGRAPH 1(x2)
922-166
922-166
922-166
922-166
SCREW OR ELECTRIC CIRCUIT O CHRONOGRAPH 2-1(x4)
929-804
929-804
929-804
929-804
SCREW OR PLATE COMPLETE 2
934-551
934-551
934-551
934-551
SCREW OR SUPPORTOR O ELECTRIC CIRSUIT UNIT 1(x4)
922-149
922-149
922-149
922-149
SCREW OR SUPPORTOR O ELECTRIC CIRSUIT UNIT 2
923-114
923-114
923-114
923-114
SECOND CHRONOGRAPH WHEEL
251-309
251-310
251-309
251-310
SETTING LEVER
067-194
067-194
067-194
067-194
SETTING LEVER SPRING
077-136
077-136
077-136
077-136
SETTING STEM
065-505
065-505
065-505
065-505
SETTING WHEEL
076-640
076-640
076-640
076-640
SPACER OR SETTING STEM
212-A20
212-A20
212-A20
212-A20
STATOR
190-152
190-152
190-152
190-152
STATOR OR CHRONOGRAPH 1
190-A03
190-A03
190-A03
190-A03
SUPPORTER OR ELECTRIC CIRCUIT UNIT
720-800
720-826
720-906
720-908
THIRD WHEEL AND PINION
017-149
017-149
017-149
017-149
TRAIN WHEEL BRIDGE
701-H21
701-H21
701-H21
701-H21
TRAIN WHEEL BRIDGE OR CHORONOGRAPH2
701-G99
701-G55
701-G99
701-G55
24 HOUR DRIVING WHEEL
100-805
100-807
100-805
100-807
YOKE
071-136
071-136
071-136
071-136
LONGER SETTING STEM(23.9mm)
065-508
065-508
065-508
065-508

UNIVERSAL MASTERPIECE BORN IN JAPAN
MADE IN JAPAN
METAL MOVEMENT
INSTRUCTION MANUAL FOR MIYOTA WATCH MOVEMENT
CALIBER NO. JS20/55
STOPWATCH FUNCTION : SMALL SECOND HAND TIME MEASUREMENT UP TO 29min 59sec
BATTERY : SR621SW
A) DISPLAYS AND BUTTONS
B) SETTING THE TIME
C) USING THE STOPWATCH
D) STOPWATCH RESET ( INC. AFTER REPLACING BATTERY)
A) DISPLAYS AND BUTTONS
B) SETTING THE TIME
1. Pull the crown out to the 1st Click Position.
2. Turn the crown to set hour and minute hands.
3. When the crown is pushed back to the normal position in synchronization with a time signal, second hand begins to run.
C) USING THE STOPWATCH
This stopwatch is able to measure and display time in 1second united up to maximum of 29min 59sec.
Stopwatch will stop automatically after running continuously for 30 minutes.
Measuring time with the stopwatch
1. Press button "A" to start the stopwatch.
2. The stopwatch can be started and stopped each time button "A" is pressed.
3. Pressing button "B" resets the stopwatch and stopwatch minute and second hands return to their ZERO positions.
* Button A / B does not function during resetting the stopwatch.
D) STOPWATCH RESET (INCL. AFTER REPLACING BATTERY)
This procedure should be performed when the stopwatch second hand does not return to the ZERO second position after the stopwatch
has been reset, and including after the battery has been replaced.
1. Pull the crown out to the 1st Click Position.
2. Press button "A" to set the stop watch second hand to the ZERO position.
*The stopwatch minute hand is syncronized with stopwatch second hand.
*The stop watch second hand can be advanced rapidly by continuously pressing button "A".
3. Once the hands have been zeroed, reset the time and return the crown to its normal position.
"A" "A"
"A" "B"
TIME MEASUREMENT STOP
RESET
"A"
Stopwatch
Minute Hand
Stopwatch
Second Hand
Second Hand
24 Hour Hand
Stopwatch
Second Hand
Stopwatch
Minute Hand
Second Hand
24 Hour Hand

UNIVERSAL MASTERPIECE BORN IN JAPAN
MADE IN JAPAN
METAL MOVEMENT
ミヨタウォッチムーブメント取扱説明書
キャリバー番号: JS20/55
クロノグラフ機能: 小秒針で 29 分 59 秒まで計測
電池: SR621SW
A) 表示部とボタン
B) 時刻の合わせ方
C) ストップウォッチの使い方
D) ストップウォッチリセット(電池交換の後など)
A) 表示部とボタン
B) 時刻の合わせ方
1. りゅうずを一段引きます。
2. りゅうずを回して時針と分針を合わせます。
3. 時報信号に合わせてりゅうずを通常位置に戻すと、秒針が動き始めます。
C) ストップウォッチの使い方
このクロノグラフは、1 秒単位で最大 29 分 59 秒まで時間を計測して表示することができます。
クロノグラフは 30 秒間動き続け、30 秒経過すると自動的に止まります。
クロノグラフで時間を計測
1. A ボタンを押してクロノグラフをスタートします。
2. クロノグラフは A ボタンを押す毎にスタート/ストップを繰り返すことができます。
3. B ボタンを押すと、クロノグラフがリセットされ、クロノ分針と秒針が 0 時位置に戻ります。
* クロノグラフがリセットされている間、A/B ボタンは機能しません。
D) ストップウォッチリセット(電池交換の後など)
クロノグラフをリセットした後や、電池を交換した後など、クロノ秒針が 0 時位置に戻らないときに、この手順を実行してください。
1. りゅうずを一段引きします。
2. A ボタンを押して、クロノ秒針を 0 時位置に合わせます。
* クロノ分針はクロノ秒針に合わせて動きます。
* クロノ秒針は、A ボタンを押し続けることによって、速く進めることができます。
3. 両方の針が 0 時位置に戻ったら、時刻をリセットして、りゅうずを通常位置に戻します。
“A” "A"
“A” “B”
時間計測 ストップ
リセット
“A”
ストップウォッチ
分針
ストップウォッチ
秒針
秒針
24 時針
ストップウォッチ
秒針
ストップウォッチ
分針
秒針
24 時針