Citizen Eco Drive B740 Settings Manual Download Page 16

x

When the function hand indicates "NG" on the charging level index. 

When the function hand indicates "NG" on the charging level, the watch will not 

measure the depth. If the function hand points at "NG" on the charging level 
during diving, immediately stop using the depth meter function of the watch 

since the watch discontinues depth measurement in this condition. 

x

When the watch stops running or malfunctions. (Be careful not to knock the 
watch against hard things such as diving apparatus, rocks, etc.) 

x

When the water temperature is out of the guaranteed range for measuring depth. 
The accuracy of the depth meter function is guaranteed under the condition that 
water temperature is b 1 O'C and +40'C (50'F and 104'F). 

x

For the purpose of knowing a risk of a behavior or situation. 
This watch is not designed to serve as a drowning prevention instrument or an 
emergency instrument. 

x

In the environment filled with helium gas (saturated diving, etc.). 
Use of the watch in such conditions may cause failure or breakdown of the 
watch.

<Circumstances that prohibit use of this watch in diving>
DO NOT use this watch for diving under the following circumstances. 

<For safe diving> 

When diving, obey the rules of the buddy system* every time. 

• For safety, it is advised that you enjoy sports diving in the depths around 20 m 

(60 ft). 

• Before diving with this watch, fully charge the battery without fail. When the 

battery is not sufficiently charged (the function hand points at "NG"), the depth 

meter function cannot be used. If battery power declines considerably during diving, 

the depth meter function to measure depth is discontinued. 

• After diving, take a good rest following safety rules. If you take a plane or move 

to a high place without a sufficient rest after diving, you may suffer from 

decompression sickness (caisson disease). 

*

 Buddy system means that two divers pair with each other for safe diving 

<During diving> 

x

Avoid quick ascending, otherwise you may suffer from submarine sickness or 
a functional disorder in some way. Whenever you ascend in water, carefully 
keep a safe speed. 

x

Don't disturb any push buttons or the crown except button (

B

) (for knowing 

the memorized maximum depth) throughout the dive, otherwise the watch may 
fail in water-resistance. 

<After diving> 

x

After confirming that the crown is screwed down tightly, wash out 
seawater, mud, sand, etc. sticking to the watch, with fresh water. Then, 
wipe off water and moisture with a dry soft cloth. 

x

Neither remove the sensor cover nor pick at it with a sharp-point in 
order to remove particles of dust, etc. collected in the sensor. If the 
sensor part is packed with dust, etc., wash it out with fresh water. In 
case it is difficult to wash out dust, consult the nearest Authorized 
Citizen Service Center about the trouble. 

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Summary of Contents for Eco Drive B740

Page 1: ...Care for This Solar Powered Watch e Switching Between Modes f Adjusting the Time and Date Time Mode g Diving Mode h Chronograph Mode i Measure Against Possible Problems j Setting Function Hand at 0 Po...

Page 2: ...tional functions Continuous operating time Additional Comments B740M B741 M Analog solar power watch 15 sec month 5 C 35OC 41 F 95 F At depth of 1 to 1 Om 5 0 to 25 Oft within 1 m 5 Oft At depth of 1...

Page 3: ...atch will continue running for about two months 4 USING THIS WATCH A Name of Parts Charge level of the battery battery power is indicated as follows LV 1 LV 2 NG by the function hand These guidelines...

Page 4: ...he charging level which is indicated by the function hand When the function hand points at LV 2 54 seconds The battery is almost fully charged Accordingly the watch can be used reliably for diving Whe...

Page 5: ...for Charging Insufficient charge warning indication Made hand DV position Function hand NG position Whenever the battery power becomes insufficient for operation the watch is automatically shifted to...

Page 6: ...ondition the second hand moves irregularly every two seconds to show that the time is incorrect Time reset warning indication This watch has an overcharge prevention function When the secondary batter...

Page 7: ...state that the watch has stopped operation in the stop warning indication Charging time for one day operation Time required for charging the battery enough for running the watch for one day starting...

Page 8: ...e battery only Never use any battery other than the specified rechargeable battery This watch is so designed that it does not run with any battery other than the specified secondary battery However if...

Page 9: ...e levels Note on operation of the crown x The crown of this watch is designed to be screwed down onto the case to secure the water resistance of the watch x For pulling out the crown for adjustment un...

Page 10: ...depth When the depth is less than 1 m 5 ft the function hand indicates 0 m 0 ft When the depth exceeds 50 m 1 25 ft the function hand stops at the over zone mark 52 seconds position to show that the...

Page 11: ...suring time and the hands move to the reset position Chronograph indication Reset position If the watch is left in reset status in the chronograph mode for 3 minutes it automatically switches to the T...

Page 12: ...the user is at high altitudes or is on an airplane flight the watch may unexpectedly be shifted to the Diving mode because of a sharp change in the atmospheric pressure pressure change equivalent to t...

Page 13: ...on and turn it until it is tightly screwed against the case x If the watch has been left without any operation for 3 minutes or longer as the crown is pulled to the second click stop position the func...

Page 14: ...dicated for about one month in which the watch can be used for diving If the battery is fully charged function hand indicates LV 2 In several hours one day after charging is stopped the scale indicate...

Page 15: ...fety and assuming the worst condition 6 NOTE ON ECO DRIVE RECHARGEABLE BATTERY Be sure you fully understand the precautions on use of this watch and how to use it in advance Before using this watch fo...

Page 16: ...m 60 ft Before diving with this watch fully charge the battery without fail When the battery is not sufficiently charged the function hand points at NG the depth meter function cannot be used If batt...

Page 17: ...f the watch Example 20 m 65 ft indicated depth x 1 025 20 5 m 67 ft real depth When the watch is shifted to the dive mode the pressure sensor regards the ambient pressures as that on the sea level 0m...

Page 18: ...sed container It should be dried immediately or taken to a watchmaker or jeweler if moisture is inside the case to prevent damage from rust Vital components necessary to resist the entrance of moistur...

Page 19: ...ct with moisture If your model is equipped with a screw down crown be sure it is properly seated against the case Do not operate the crown or any push button when the watch is wet as this may allow th...

Page 20: ...ute position To review the depth of the last dive while in the time mode press and release the upper right button to activate the call feature The function hand will rotate to indicate the depth attai...

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