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Troubleshooting
Troubles Possible causes Solutions
The watch stops
operating. The mainspring has not been wound.
Wind the mainspring as mentioned in “How to
wind the mainspring” (P. 13), and reset the
time and use it. If it does not work still, contact
the retailer where the watch was purchased.
Even though you wear
the watch every day,
the power reserve
indicator does not
move up.
The watch is worn on your wrist only for a short
period of time, or the amount of arm
movement is small.
Wear the watch for an extended period of
time, or when taking off the watch, turn the
crown to wind the mainspring if the remaining
power shown by the power reserve indicator
is not sufficient for the next use.
The watch stops even
though the power
reserve indicator is
not showing “0”.
The watch has been left at a low temperature
(below 0°C).
Turn the crown to wind the mainspring and
reset the time. At a temperature below 0°C,
the watch may stop if the power reserve
indicator is showing less than one-sixth of the
power reserve.
EN 60
6
TROUBLESHOOTING
Troubles Possible causes Solutions
The watch temporarily
gains/loses time.
The watch has been left in extremely high or
low temperatures for a long time.
Return the watch to a normal temperature so
that it works accurately as usual, and then
reset the time. The watch has been adjusted
so that it works accurately when it is worn on
your wrist under a normal temperature range
between 5°C and 35°C.
The watch has been left close to an object
with a strong magnetic field.
Correct this condition by moving and keeping
the watch away from the magnetic source,
and reset the time. If this action does not
correct the condition, contact the retailer from
whom the watch was purchased.
You drop the watch, hit it against a hard
surface, or wear it while playing active sports.
The watch is exposed to strong vibrations.
If accuracy does not return after setting the
time, consult the retailer from whom the watch
was purchased.
The watch has not been overhauled for more
than 3 years.
Consult the retailer from whom the watch was
purchased.
Right after starting the
watch, it seems that
the seconds hand
moves more quickly
than usual when
setting the time.
When the watch starts moving, it takes a little
time before the speed-regulating unit starts
operating. (This is not a malfunction.)
It takes several seconds before the speed-
regulating unit starts operating.
To set the time correctly, wait for
approximately 30 seconds after the seconds
hand starts to move, and set the time.
The date changes at 12
o’clock noon. AM/PM is not properly set. Advance the hands by 12 hours.
Blur in the display
persists.
Small amount of water has got inside the
watch due to deterioration of the gasket, etc.
Consult the retailer from whom the watch was
purchased.
* For a solution to a problem other than listed above, contact the retailer from whom the watch was purchased.
EN 61
6
TROUBLESHOOTING
Specifications
Cal. 5R65 5R66
1.Features 3 hands (hour, minute and seconds
hands), date display, power reserve
indicator
3 hands (hour, minute and seconds
hands), 24-hour hand, date display,
power reserve indicator
2. Frequency of crystal
oscillator
32,768 Hz (Hz = Cycles per second)
3. Loss/gain (daily rate) ±15 seconds (±1 second per day)
(Only if worn on the wrist in a temperature range of 5°C to 35°C)
4. Operational
temperature range
10 °C to +60 °C
Under a low-temperature condition (below 0 °C), always keep at least one-sixth of
the watch power shown by the power reserve indicator.
5. Driving System Automatic winding type with manual winding mechanism
6. Hand movement Glide motion
7. Continuous operating
times
Approx. 72 hours (Approx. 3 days)
* When the power reserve indicator shows fully wound.
* Continuous operating time may be shortened depending on how the product is used.
8. IC (Integrated Circuit) Oscillator, frequency divider, and spring drive control circuit (C-MOS-IC): 1 piece
9. Jewels 30 jewels
* The specifications are subject to change without prior notice due to product improvements.
EN 62
7
SPECIFICATIONS
EN 63
17


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