Making Accurate Depth Readings; High Altitude & Freshwater Diving; Before Diving; After Diving - Citizen 3740 Manual

[ Making accurate depth readings ]

1.Switch the watch to the Diving Mode
shortly before diving.
2.When there is a great difference
between the air and water temperature,
immerse the watch in the water for 2-3
minutes before switching it to the Diving
Mode.
3.Confirm that the mode hand points to
DV and the function hand points to 0
when the watch is switched to the Diving
Mode. If the hands are in the wrong
position please refer to ALL RESET on
page 23.
4.Avoid too rapid descents and ascents
when diving. The function hand will
not adjust quickly enough during
descents or ascents faster than about 1
meter(2.5ft) per minute. Slowdown or
stop in order to obtain an accurate
depth reading.
* Never pull out or turn the crown or
press the buttons while diving. Doing
so may cause water to penetrate the
case.
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[ High altitude & freshwater diving ]
When the Diving Mode is activated, the
depth is calibrated at 0 meter(0ft) based
on the surrounding air pressure. This
enables the watch to be used while diving
at high-altitudes and/or in lakes, as long
as the Diving Mode is activated at that
altitude.
However, an accurate measurement is
not possible at altitudes over 4,000
meters(131,24ft). Do not use this watch
when diving in such places. Further, this
watch displays changes in depth based
on a standard of seawater (density
1.025). Depths indicated in fresh water
will actually be about 2.5% over indicat-
ed.
Be sure to complete appropriate safety
training before diving in fresh water or at
high altitudes.
(Example) 20 meters(50ft) (indicated
depth) x 1.025 = 20.5 meters (51.25ft)
(actual depth)

[ Before diving ]

1.Make sure that the crown is pushed all the way in and locked in place.
2.Make sure that there are no cracks or other damage to the watch band or the glass face.
Damage to the band may result in the band breaking and loss of the watch.
3.Make sure that the band is firmly anchored to the watch body.
4.Make sure that the register ring rotates properly.
5.Make sure that the time and date are correctly set.
6.Make sure that the second hand is moving correctly.
* If the second hand is moving in 2-second increments, then the battery is low. Request
battery replacement at the place of purchase, or by contacting a Citizen Service Center directly.

[ After diving ]

1.After making sure that the crown is locked in place, wash the watch free of seawater, mud and
sand using fresh water. Wipe completely with a dry cloth.
2.Do not attempt to remove the sensor cover or remove any dirt or debris clogging the sensor por-
tion of the watch using a sharp instrument. Rather, flush out such debris using fresh water. If this
fails, please consult a Citizen Service Center.
3.For general repairs and maintenance please refer to "Care for long term use" on pages 28,
29, 30 & 31.
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