
NREV657
08-96
Stopwatch
minute
hand
Stopwatch 1/10-second hand
A
B
Crown
Second
click
INSTRUCTION MANUAL
CAL. V657 (RJN SERIES)
■ CHARACTERISTICS
1. Time: Indicated by the hour, minute and
second hands.
2. Date: Displayed in numerals.
3. Stopwatch: Measures up to 60 minutes
in 1/10 second increments.
•Split time measurement
■ DISPLAY AND CROWN OPERATION
Stopwatch 1/10-second hand
Hour hand
Stopwatch
minute
hand
Second
hand
Stopwatch second hand
Crown :
Normal position : Free
First click : Setting the date
Second click : • Setting the time
• Adjusting the stopwatch
hand position
■ADJUSTING THE STOPWATCH HAND
POSITION
Before setting the time, be sure to check if
the stopwatch hands are in the “0” position
when the stopwatch is reset.
•If the stopwatch is in use, press the buttons
in the following order to reset it.
•If the stopwatch is counting : A ➡ B
•If the stopwatch is stopped : B
•If the split time is displayed : B ➡ A ➡ B
•If any of the stopwatch hands do not
return to the “0” position when the
stopwatch is reset, follow the procedure
below to reset the hands.
Minute hand
A
Date
First
click
B
Normal
position
Crown
Second
click
Stopwatch second hand
1. Pull out the crown all the way.
2. Press “A” repeatedly to reset the stopwatch
1/10-second hand to the “0” position.
Press “B” repeatedly to reset the stopwatch
second and minute hands to the “0” position.
* The hands move quickly if the respective
buttons are kept pressed.
3. Push the crown back into the normal position.
■ HOW TO SET THE TIME/CALENDAR
• If the stopwatch is in use, be sure to reset
it before setting the time.
Second hand
Minute handHour hand
A
B
First click
Crown
Second
click
6
Date
1. Pull out the crown to the first click.
2. Turn the crown clockwise until the previous
day’s date appears.
3. Pull out the crown to the second click
when the second hand is at the 12 o’clock
position. The second hand will stop on
the spot.
4. Turn the crown clockwise until the desired
date appears, and set the hour and minute
hands to the desired time.
5. Push the crown back into the normal position
in accordance with a time signal.
Notes:
1. While the crown is at the second click,
do not press any button. Otherwise, the
stopwatch hands will move.
* To reset them to the “0” position, refer to
“ADJUSTING THE STOPWATCH HAND POSITION”.
2. Do not set the date between 9:00 p.m.
and 1:00 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.
3. When setting the hour hand, be sure to
check that AM/PM is correctly set. The
watch is so designed that the date changes
once in 24 hours.
4. When setting the minute hand, first advance
it 4 to 5 minutes ahead of the desired
time and then turn it back to the exact
minute.

■HOW TO USE THE STOPWATCH
• The stopwatch can measure up to 60 minutes
in 1/10 second increments.
•The measured time is indicated by the small
stopwatch hands that move independently
of the center hands.
Stopwatch 1/10-second hand ✩
A
Stopwatch
minute
hand
B
Stopwatch second hand
✩ After the measurement exceeds 1 minute, the
stopwatch 1/10-second hand stays at the “0”
position.
When the measurement is stopped, it will move
to indicate the elapsed 1/10 seconds.
Stopwatch operation
Standard measurement
A
A
Start Stop Reset
Accumulated elapsed time measurement
A
A A
Start Stop Restart Stop Reset
* Restart and stop of stopwatch
can be repeated by pressing
button “A”.
Split time measurement
B
A
B
■ NECESSARY PROCEDURE AFTER
BATTERY CHANGE
• When the battery is replaced, the time information
stored in the built-in IC and the time indicated
by the stopwatch hands do not correspond
with each other. Before using the watch,
therefore, be sure to reset the hands to the
“0” position, following the procedure below.
* In case any of the hands should move improperly,
follow the procedure below to adjust the hand
movement.
Stopwatch 1/10-second hand
A
Crown
Stopwatch
minute
hand
B
Second
click
Stopwatch second hand
1. Pull out the crown all the way.
2. Press and hold “A” and “B” at the same
time for 2 seconds, and then release the
buttons.
* The stopwatch second hand turns half a
circle counterclockwise and then returns
where it was. The stopwatch 1/10-second
hand turns a full circle clockwise and
stops.
3. Press “A” repeatedly to reset the stopwatch
1/10-second hand to the “0” position.
Press “B” repeatedly to reset the stopwatch
second and minute hands to the “0” position.
* The hands move quickly if the respective
buttons are kept pressed.
4. Turn the crown to set the hour and minute
hands to the desired time.
* For details, refer to “HOW TO SET THE
TIME/CALENDAR”)
5. Push the crown back into the normal
position.
A
Start Split Split Stop Reset
Note: When “B” is pressed to reset the
stopwatch to “00”, the stopwatch second
and minute hands return to “0” position
in 40 seconds.
BB
release
* Measurement and release of
split time can be repeated by
pressing button “B”.
A
B
■ LUMIBRITE WATCH
(dial, hands, buttons, case, bezel,
strap, etc.)
✩ If your watch is a LORUS LUMIBRITE watch,
it has following features.
LORUS LUMIBRITE watches absorb and store
light energy from natural and artificial light
sources and emit light in the dark. They are
made of environmentally friendly material,
and therefore, are harmless to human beings
and the environment.
• With a full charge, LORUS LUMIBRITE
watches glow in the dark hours longer than
conventional luminous watches of this type.
If exposed to a light of more than 500 lux
(i.e., the brightness of a typical office) for
approximately 10 minutes, or direct sunlight
for 2 minutes, they will glow for hours.
• Since LORUS LUMIBRITE watches emit
the light they store, the brightness will
decrease gradually over time. The length
of time they will glow may also differ slightly
depending on such factors as the brightness
of and distance from the light source used
to charge the watch.

■ BATTERY CHANGE
The miniature battery SEIKO SR920SW, Maxell
SR920SW, SONY SR920SW, Matsushita SR920SW
or EVEREADY 371, which powers your watch
should last approximately 2 years. However,
because it is inserted at the factory, the actual
life of the battery once in your possession
may be less than the specified period.
Be sure to replace the battery to prevent any
possible malfunction as soon as it runs down.
To replace the battery, we recommend taking
the watch to a local watch repair shop.
Note: If the stopwatch is used more than
60 minutes a day, the battery life
may be less than the specified period.
■ CARE OF YOUR LORUS WATCH
• BATTERY
CAUTION
Do not expose the old battery to
fire or recharge it. Keep it at a
place beyond the reach of children. If a child swallows it,
consult a doctor immediately.
• WATER RESISTANT
Condition
Accidental
of use
contact with
No
water, such
as splashes
and rain
*
)
Indication on
the dial/
case back
indication
WATER
RESISTANT
WATER
RESISTANT
(50 M/5 BAR)*
WATER
RESISTANT
100 M/
10 BAR or
(
above
* If your watch is 200 M/20 BAR, 100 M/10
BAR or 50 M/5 BAR water resistant, it is so
indicated on the dial/case back.
• Do not press the buttons or turn the crown
when the watch is wet.
• If the watch is exposed to salt water, rinse
it in fresh water and then wipe it thoroughly
dry.
Caution:
Leather straps are not water resistant except
so indicated, even if the watch head is water
resistant.
• ALLERGIC REACTION
Because the case and band touch the skin
directly, it is important to clean them
regularly. If not, shirt sleeves may be
stained and those with delicate skin may
develop a rash. Please wear the watch
with some play to avoid any possible allergic
reaction. If you develop a rash on your
wrist, stop wearing and consult a physician.
• MAGNETISM
Your watch will not be affected by magnetism generated by household electric
appliances.
• SHOCKS AND VIBRATIONS
Your watch may be worn for normal sports
activities, but be careful not to drop it or
hit it on hard surfaces.
• TEMPERATURE
Your watch is preadjusted so that constant
accuracy may be insured at normal temperature.
Swimming and
taking a
shower
NO NO NO NO
YES NO NO NO
YES YES NO NO
YES
Skin
Scuba
diving
diving
YES YES NO
■ SERVICE
When your LORUS watch requires repair or
servicing, please see the enclosed WARRANTY/
GUARANTEE.
Printed in Hong Kong