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This watch is an analog (hand) display diver's watch equipped with an elec-
tronic depth meter. The familiar watch-face format is convenient to confirm
depths while diving. Further, a chronograph function finds uses in a variety of
activities besides diving. (Please note that the depth meter function should be
used only as an auxiliary instrument.)
"Highly reliable water resistant for use at depths of up to 200 meters"
The high-reliability water resistant conforms to ISO standards for diving watches.
* ISO diving watch standards are those set forth by the International Organization For
Standardization.
All repairs of this product, including battery replacement,
should be conducted at a Citizen Service Center. For repairs
and inspections please contact the place of purchase or contact
a Citizen Service Center directly.
Two models of this watch are available:one with depth readings indicated in
meters (m), the other with readings indicated in feet (ft).
E E n n g g l l i i s s h h
<ISO/6425, 15 May 1984>
3
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Summary of Contents for Citizen 3740
- Page 1 Standardization. <ISO/6425, 15 May 1984> All repairs of this product, including battery replacement, should be conducted at a Citizen Service Center. For repairs and inspections please contact the place of purchase or contact a Citizen Service Center directly. Two models of this watch are available:one with depth readings indicated in...
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Page 2: Table Of Contents
Table of contents Diving with this watch················································································· Chronograph Mode····················································································· Safe diving··································································································· Operating the Chronograph Mode······························································· Do not use the depth meter when······························································· In these cases······························································································ Stop using this product while diving when··················································· When the second hand moves in 2-second increments······························ Operating instructions················································································... -
Page 3: Diving With This Watch
2 years. (However, this will vary greatly depending on the frequency of depth meter use. Replace the battery early.) *Battery replacement should be conducted only at Citizen Service Centers. 5.Be sure to rest sufficiently after diving, as specified by diving rules. -
Page 4: Do Not Use The Depth Meter When
The warranted temperature range for the depth meter in this watch is knocking the watch against diving equipment, rocks or other hard from 10°C to 40°C/50°F to 104°F. objects.)* Service for this watch should be conducted only by Citizen 3.In potentially dangerous activities or conditions. Service Centers. -
Page 5: Operating Instructions
Operating instructions Please read the instructions below while referring to the foldout watch diagram located on the opening page of this manual. This watch has three modes: Time Mode, Diving Mode, and Chronograph Mode. [ Switching modes ] [ Names of Parts ] Switch between the three modes simply by pressing button1 Time Mode Diving Mode... -
Page 6: Time Mode
: Switch to the Time Mode from the Diving Mode by pressing button 1 continuously for 2 sec- Time Mode onds. Switch to the Time Mode from the Chronograph Mode by pressing button 1 once. Setting the date <When manipulating the crown...> About the Time Mode 1.Unscrew the crown in the indicat- About the screw lock... -
Page 7: Diving Mode
Diving Mode : From the Time Mode, or the Chronograph Mode, switch to the Diving Mode by pressing but- ton1 continuously for 2 seconds. [ Maximum depth memo function ] About depth readings This watch automatically records the maximum depth reached during a dive (in 1 meter(2.5ft) increments). This memo is retained until the watch is set to the Diving Mode again and a depth of 1 meter(5ft) or more is reached. -
Page 8: Making Accurate Depth Readings
However, an accurate measurement is DV and the function hand points to 0 battery replacement at the place of purchase, or by contacting a Citizen Service Center directly. not possible at altitudes over 4,000 when the watch is switched to the Diving meters(131,24ft). -
Page 9: Chronograph Mode
Chronograph Mode : Switch from the Time Mode to the Chronograph Mode by pressing button 1 once. [ Operating the Chronograph Mode ] About chronograph measurements Press button 1 1.A maximum of 50 minutes may be measured by the chronograph. After 50 minutes (1/20 second=0.05 second increments) measurement will stop auto- Press button 2 Time Mode... -
Page 10: In These Cases
2 years estimated for normal batter- ies. c) Battery replacement 1.All battery replacements should be done by a Citizen Service Center. To replace the battery, please contact the place of purchase or contact a Citizen Service Center directly. Time Mode 2.When replacing the battery, inspection of water resistance and other parts should be conducted,... -
Page 11: After The Battery Is Replaced Or If The Hands Are
[ After the battery is replaced or if the hands are in the wrong position ] [ Using ALL RESET and Adjusting the position of the hands ] Please refer to the fold-out watch diagram located on the opening page of this manual. 1.Unscrew the crown to release it, and pull it out two steps. -
Page 12: When The Function Hand Is In The Wrong Position
[ When the function hand is in the wrong position ] [ Automatic time adjustment function ] Please refer to the fold-out watch diagram located on the opening page of this manual. Be sure to complete the hand position adjustment within four minutes. If so, *If, when switching from the Time Mode to the Diving Mode, the function hand the hands will spin rapidly to display correct time when you complete the does not point to 0. -
Page 13: Other Functions
Other functions [ No decompression limits ] [ Register ring ] The range of time when it is unnecessary to stop to decompress while surfacing Use the register ring to measure elapsed time. from a dive is determined by the depth and time of the dive. These values are <Using the register ring>... -
Page 14: Care For Long Term Use
• If you cannot clean the sensor, bring watch checked at the Citizen Service 6) Magnetic Fields • Be careful that foreign objects such as the watch to the Citizen Service Center. Center at the time of 2) Watch Band This watch is antimagnetic up to 60... - Page 15 If the glass is broken, bring • Metal band Wash soiled parts with a Avoid wearing the watch in the pres- it immediately to the Citizen Service tooth brush in mild, soapy water. ence of strong chemicals or gases. If Center for repair or replacement.
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Page 16: Specifications
Specification 1. Model Analog depth meter with chronograph * Present depth indicator: 1m(5ft)-50m(125ft) (1m(2.5ft) 2. Accuracy of time measurements ±20 seconds/month increments);Depth less than 1m(5ft) indicated as 0m(0ft) (within normal temperature range) * Depth over display: When depth is more than 50m(125ft) 3.
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