Seiko Watch Y187 User Guide

You are now the proud owner of a SEIKO Analogue Quartz Watch Cal.  
Y187. For best results, please read the instructions in this booklet  
carefully before using your SEIKO Analogue Quartz Watch. Please keep  
this manual handy for ready reference.  
Siete ora in possesso di un orologio SEIKO Analogico al Quarzo Cal. Y187.  
Per ottenere i migliori possibili risultati dal vostro orologio, leggere  
attentamente le istruzioni di questo manuale prima di utilizzare il vostro  
orologio SEIKO analogico al quarzo. Conservare poi il manuale stesso per  
ogni qualsiasi eventuale futuro riferimento.  
 
CAL. Y187  
STOPWATCH  
STOPWATCH minute and 1/5-second  
hands  
Measures up to 30 minutes in 1/5 second  
increments.  
Split time measurement  
TIME/CALENDAR  
Hour and minute hands with small  
second and 24-hour hands  
Date displayed in numerals  
 
3
DATE SETTING  
CROWN  
Date  
Pull out to first click and turn clockwise  
until the previous day’s date appears.  
Pull out to second click and turn until the  
desired date appears.  
8
Push back in to normal position.  
TIME SETTING  
Hour hand  
Minute hand  
CROWN  
Pull out to second click when Small sec-  
ond hand is at the 12 o’clock position.  
Turn to set 24-hour, Hour and Minute  
hands.  
8
Push back in to normal position in accor-  
dance with a time signal.  
24-hour hand  
Small second hand  
 
4
STOPWATCH  
The stopwatch can measure up to 30 minutes in 1/5 second increments.  
After 30 minutes, it will start counting again from “0” repeatedly up to 6 hours.  
STOPWATCH OPERATION  
STOPWATCH minute hand  
Reset / Split / Split release  
Start / Stop / Restart  
B
A
STOPWATCH 1/5-second hand  
Before using the stopwatch:  
Check that the crown is set at the normal position.  
Press button B to reset the STOPWATCH hands to “0” position.  
 
5
Standard measurement  
A
START  
A
STOP  
B
RESET  
Accumulated elapsed time measurement  
* Restart and stop of  
the stopwatch can  
be repeated by  
pressing button A.  
• • • •  
A
START  
A
STOP  
A
A
STOP  
B
RESET  
RESTART  
Split time measurement  
* Measurement and  
release of split  
t i m e c a n b e  
r e p e a t e d b y  
pressing button B.  
• • • •  
A
START  
B
SPLIT  
B
SPLIT  
A
STOP  
B
RESET  
RELEASE  
Measurement of two competitors  
A
START  
B
A
2ND  
COMPETITOR  
FINISHES  
B
RESET  
B
FINISH TIME  
FINISH TIME  
OF 2ND  
OF 1ST  
COMPETITOR  
COMPETITOR  
 
6
ADJUSTING THE HAND POSITION  
If the STOPWATCH hands do not return to “0” position when the stopwatch is reset or when  
the battery is replaced with a new one, follow the procedure below.  
STOPWATCH  
minute hand  
CROWN  
Pull out to second click.  
Press repeatedly to reset STOP-  
WATCH minute hand to “0” posi-  
tion.  
A
B
A
Press repeatedly to reset STOP-  
WATCH 1/5-second hand to “0”  
position.  
B
CROWN  
Push back in to normal position.  
STOPWATCH  
1/5-second hand  
* Hands move quickly if the respective buttons are  
kept pressed.  
* After adjusting the STOPWATCH hand position, be  
sure to set the time following the procedure in  
“TIME SETTING”.  
 
7
NOTES ON USING THE WATCH  
DATE SETTING  
Do not set the date between 9:00 p.m. and 3:00 a.m. Otherwise, the date may not change properly. If  
it is necessary to set the date during that time period, first change the time to any time outside it, set the  
date and then reset the correct time.  
TIME SETTING  
The 24-hour hand moves correspondingly with the hour hand. When setting the hour hand, check the 24-  
hour hand to see that AM/PM is correctly set.  
When setting the minute hand, advance it 4 to 5 minutes ahead of the desired time and then turn it back  
to the exact time.  
STOPWATCH  
When the stopwatch has been reset and button A is pressed before the STOPWATCH hands reach “0”  
position, the stopwatch starts counting time as button A is pressed.  
Note on crown operation while the stopwatch is in use:  
Even if the crown is pulled out to the first click, the stopwatch continues measuring. However, if it is pulled  
out to the second click, the STOPWATCH hands are reset to “0” position.  
HOW TO OPERATE THE SCREW LOCK TYPE CROWN  
(for models with screw lock type crown)  
To unscrew the crown:  
Turn the crown counterclockwise. Then, pull it out for time/calendar setting or for adjusting the  
STOPWATCH hand position.  
To screw in the crown:  
With the crown at the normal position, turn it clockwise while pressing it.  
 
8
BATTERY LIFE INDICATOR  
Whenthebatterynearsitsend, thesmallsecondhandmovesattwo-secondintervalsinstead  
of normal one-second intervals to indicate that the battery needs to be replaced with a new  
one.  
BATTERY CHANGE  
The miniature battery which powers your watch should last approximately  
2
Years  
2 years. However, because the battery is inserted at the factory to check  
the function and performance of the watch, its actual life once in your  
possession may be less than the specified period. When the battery expires,  
be sure to replace it as soon as possible to prevent any malfunction. For  
battery replacement, we recommend that you contact an AUTHORIZED  
SEIKO DEALER and request SEIKO SR927SW battery.  
* If the stopwatch is used to measure up to 30 minutes more than twice a day, the  
battery life may be less than the specified period.  
WARNING  
Do not remove the battery from the watch.  
If it is necessary to take out the battery, keep it out of the reach of children. If  
a child swallows it, consult a doctor immediately.  
 
9
CAUTION  
Never short-circuit, heat or otherwise tamper with the battery, and never  
expose it to fire. The battery may burst, become very hot or catch fire.  
The battery is not rechargeable. Never attempt to recharge it, as this may cause  
battery leakage or damage to the battery.  
SPECIFICATIONS  
1
2
Frequency of crystal oscillator ......  
Loss/gain (monthly rate) ................  
32,768 Hz (Hz = Hertz ... Cycles per second)  
Less than 20 seconds at normal temperature range (5° C ~ 35°  
C) (41° F ~ 95° F)  
3
4
5
Operational temperature range .....  
Driving system ..............................  
Display system  
–5° C ~ +50° C (23° F ~ 122° F)  
Step motor, 3 pieces  
Time .......................................  
Date ........................................  
Stopwatch ..............................  
Hour, minute, second and 24-hour hands  
Displayed in numerals.  
Minute and 1/5-second hands  
The stopwatch measures up to 30 minutes in 1/5 second increments.  
SEIKO SR927SW, 1 piece  
6
7
8
Battery ..........................................  
Battery life indicator  
IC (Integrated Circuit) ....................  
C-MOS-LSI, 1 piece  
*
The specifications are subject to change without prior notice for product improvement.  
 
10  

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