Citizen Eco Drive B740 Settings Manual Download Page 17

<Regarding diving at high altitudes or in fresh water> 

x

If you intend to use this watch for diving in a high place or in fresh 
water, be sure to have a special education in safe diving beforehand. 

x

Don't use the depth meter function of this watch in a high place 4,000-m 
(13,120-ft) or more above sea level, because the watch gives incorrect 
measurement of depth in such a place. 

x

This watch indicates a depth based on the specific gravity (1.025) of 
seawater. Therefore, if the watch is used in fresh water, the real depth is 
2.5% less than the indication of 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/0ft in 

depth or altitude) If the watch is shifted to the dive mode in a high 

place, it regards the pressure on the surface of the water as that on 

seal level (0m/0ft in depth/altitude). In short, the watch always 

regards the surface of the water as that of sea level (0m/0ft) except 

in a place 4,000m (13,120ft) or more above sea level. Therefore you 

are advised 

NOT TO

 use the depth meter function of this watch at high 

altitudes for the reason that the watch will give inaccurate 

measurement in depth. 

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Return to Table of Contents

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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