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[No decompression limits]
The range of time when it is unnecessary to stop to
decompress while surfacing from a dive is
determined by the depth and time of the dive. These
values are referred to as “No Decompression Limits.”
Use these as estimates when diving.
No Decompression Limits, based on the American
Navy Diving Manual (1985), are printed on the band
of this watch. (Some models may not have this chart.)
Caution: The no decompression limit is different
depending on body condition, or personal differences.
Please use the no decompression limits on this
watch as a guide line.
When a dive requires no decompression limits
make sure you follow a specialised diver’s manual.
Example: If the diver is at 21 metres or 50 minutes
or less, then it is OK to surface without stopping to
decompress.
Care for long term use
Water resistance
1) Pressure Sensor
* Never disassemble the sensor cover which
protects the pressure sensor.
* Be careful that foreign objects such as sand, dust
or other matter does not enter into the sensor. If
such objects has entered into the sensor, wash it
away with fresh water. Do not use alcohol, gasoline,
thinner or other chemical substances.
* If you cannot clean the sensor, bring the watch to
the Citizen Service Centre.
2) Watch Band
* If the watch band shows cracks, replace it with a
new band.
* When replacing the watch band also replace the
spring bars connecting the watch and the band.
3) Water-resistance
* This diver’s watch is designed to resist water
pressure to a maximum depth of 200 metres.
Before using this watch under water, push in the
crown and tighten the screw lock completely.
* All services after sale including battery replacement
are provided by the Citizen Service Centre. Never
have the case back open or the screws on the
sensor loosened at facilities other than the Citizen
Service Centre.
* In order to maintain water-resistance, we
recommend that you have the watch checked at
the Citizen Service Centre at the time
of battery replacement once every one
or two years.
* The case back is marked “Don’t Open.
Service Centre Repair Only”.
4) Temperature
Avoid exposing the watch to direct sunlight or leaving
it in extremely hot or cold locations for a long time.
* This will cause malfunctioning and shorten the life
of the battery.
* This may cause your watch to gain or lose time
and affect its other functions.
5) Shock
* This will withstand the bumps and jars normally
incurred in daily use and while playing such non-
contact sports such as golf and catchball.
* Dropping the watch on the floor or otherwise
imparting severe shock to it may cause
malfunctioning or damage.
6) Magnetic Fields
This watch is antimagnetic up to 60 gauss and not
affected by the magnetic fields produced by ordinary
household electric appliances. If used in the
immediate vicinity of strong magnetism, however,
the watch’s functions may temporarily be affected.
7) Static Electricity
The integrated circuits used in the watch are sensitive
to static electricity. If exposed to intense static
electricity, the watch’s display may lose its accuracy.
8) Chemicals and Gases
Avoid wearing the watch in the presence of strong
chemicals or gases. If the watch comes in contact
with such solvents as thinner and benzine or
products containing materials such as gasoline, nail
polish, detergent or adhesive, its components may
discolour, dissolve or crack. Be especially careful to
avoid chemicals. The watch case or band may
discolour if they come in contact with mercury from
a broken thermometer or other equipment.
<NOTE>
The register-ring may only be turned counter-
clockwise (this helps prevent unwanted movement).
Do not attempt to force it to turn clockwise.
<Reading the Chart>
Depth.m N.D.Time
12m (40ft)
..........
200Min
15m( 50ft)
..........
100Min
18m(60ft)
...........
60Min
21m(70ft)
...........
50Min
24m(80ft)
...........
40Min
27m(90ft)
...........
30Min
30m(100ft)
.........
25Min
33m(110ft)
.........
20Min
36m(120ft)
.........
15Min
39m(130ft)
.........
10Min
42m(140ft)
.........
10Min
45m(150ft)
.........
5Min
6


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