Calibre 644
Automatic Movement Operation Manual
Automatic watches can be used only by those who are reasonably active as the automatic
winding relies on a regular movement of the wrist. The watch must be given an initial manual
wind of 8 to 10 turns and provided that it is worn on the wrist for a minimum of 8 hours each
day it will continue to function indefinitely and may be taken off the wrist for a maximum period
of 30 hours. If this period is exceeded the movement will stop and another manual wind will be
necessary. It must be remembered that when worn in bed the movement of the wrist is
insufficient to operate the automatic winding.
Time Stand Accuracy
1) 21,600 beats per hours
2) Accuracy between -30 to +30 seconds per day worn under normal conditions.
Butterfly Strap Adjusting Instruction
Firstly, open the butterfly buckle and then pull out the pin. Adjust the strap to the required
length, and then push back the pin into the correct hole. Finally, close the butterfly buckle until
it clicks into place.
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Water Resistance Table
Level of
Water
Resistance
Suitable for
Everyday
use
Can
withstand
accidental
splashing
Suitable for
Swimming
Suitable for
Pool Size
Suitable
for
snorkelling
or water
sports
Suitable for
high board
diving or sub-
aqua diving
None Yes No No No No No
3 ATM
(30m/
100ft
Yes Yes No No No No
5 ATM
(50m/
150ft)
Yes Yes Yes Yes No No
10 ATM
(100m/
300 ft)
Yes Yes Yes Yes Yes No
Water resistance is not permanent. In the course of time, the gaskets of the case and
crown may become worn and reduce the water resistance of your watch. We recommend
the periodic checking
Normal Crown – always make sure it is pushed fully into case
Screw down Crown – tighten screw down crown completely to screw lock position.
To maintain water –resistance crystal, crown and case must remain intact
Exposure to Salt Water
If your watch is designed for sports or working in the water and it becomes exposed to salt
water or significant amounts of perspiration, it should be rinsed in fresh water and dried
thoroughly with a soft dry cloth.
Important
Buttons must not be operated while in contact with water
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Functions
- Hours
- Minutes
- Seconds
- Day of the Week
- Date
- Water Resistance – Check the back of the watch and refer to the Table.
Instructions For Setting Day & Date
Important
•Do not set the day & date between 06.00 PM and 06.00 AM, as this may cause
damage to the movement.
•At the end of the each month the date is required to be changed manually.
1) To achieve an accurate day of the week setting, by using a pointed device,
press button A until a day prior to the day you require is achieve i.e. if today is
Wednesday then set in onto Tuesday
2) To achieve and accurate date setting, by using a pointed device, press button B
until a date prior to the date you required is achieve i.e. if today is the 16
th
then
set it onto the 15
th
3) Now pull the crown out to first position and turn the crown anti-clockwise until the
day of the week is correct. The day and date will now be corrected, now set the
time but make sure the time is set onto am or pm.
4) Finally push the crown back into Normal Position
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Calibre 644
IN1817
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