Model No. BK3XX
Caliber No. 2502, 2512
Model No. EMXXX
5502, 5503, 5512, 6008, 6018
A. BEFORE USING
Confirm the caliber number of your watch by the
stamp on its case back. This instruction manual
explains how to use Calibers 2502, 2512, 5502,
5503, 5512, 6008 and 6018.
B. SPECIAL FEATURES OF YOUR WATCH
This instruction book is written for the 200m water
resistant diver’s watch (Caliber 2502, 2512, 5502,
5512, 6008, 6018) and 800m water resistant
professional diver’s watch (Caliber 5503)
These watches have the following special features.
1. The register ring which is very important for
checking diving time, has the added function that
prevents it from being rotated in the counterclockwise
direction to make it much safer. A register-ring that
cannot be turned in the counterclockwise direction.
2. The screwlock type crown with double O-ring.
The crown is a screwlock type which uses a double
O-ring type with 3 water resistant packings to
improve airtightness and water resistance.
3. The “No decompression limits table” imprinted on
the wristband (there are some models without this
table) to enable divers to dive safely.
The “No decompression limits table’’ is indicated
on the wristband to enable divers to dive safely.
4. Helium gas insulation for professional diver’s
watch (Caliber 5503).
The ability to withstand the pressures of saturated
diving using helium gas has been increased.
By using a strong hard screw type fixed glass
ring, the watch is safe even on the off chance
that the helium gas penetrates the seals.
* The specification of each Caliber, can be found in
section “1. Specifications”.
C. SETTING THE WATCH
According to the model, the crown may be positioned
differently from the illustrations shown, however the
operation is the same. So please use this instruction
booklet a corresponding way.
* The crown of this watch is of screwlock type and
must first be turned counterclockwise to loosen it.
* Do not operate the crown in water or while the
watch is wet.
1. Setting the Time
a. To stop the second hand, wait until second hand
is on “0” sec, then pull out crown to position (2).
b. Turn the crown to set the minute/hour hands to
the desired time.
c. To start the second hand, push the crown back
to position (0).
2. Setting the calendar
a. Pull out the crown to position (1).
b. Turn the crown clockwise until the desired day
of the week appears. Turn the crown to
counterclockwise until the desired date appears.
* Do not set the date and day between 9:00pm
and 4:00am otherwise the date and day may
not change properly.
After the time and calendar have been set, be
sure to push the crown to the position (0) and
lock it by screwing.
D. HOW TO USE THE REGISTER-RING
The register-ring is a convenient way to keep track
of diving time, permitting the indication of the
elapsed and remaining times.
* Turn the register-ring counterclockwise, while
pushing it. It is locked under normal conditions to
prevent free rotation, and cannot be turned in the
reverse direction for safety reasons.
* Determination of elapsed time: Preset the mark
on the register-ring to the minute hand, and the
elapsed time can be shown by the register-ring scale.
* Determination of remaining time: Preset the mark
on the register ring to a certain required time, and
the remaining time can be read with the ring scale.