Citizen E100 User manual

Citizen E100 User manual
Setting Instructions for Movement Caliber E100
Contents (click on a topic)
About Solar Powered Watches
Setting the Time and Calendar
Functions of the Solar Power Watch
Time Required for Recharge
Notes on Recharging
About the Eco Drive Rechargeable Battery
Care of Your Timepiece
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This watch is an analog solar powered timepiece that has a solar cell on its dial that
converts the light into electrical energy to drive the movement.
2. Specifications
Within +/- 15 seconds per month (when worn at normal
temperatures of 5oC to 35 oC/(41oF to 95 oF)
Operating temperature range
Hour, Minute, Seconds
Movement Caliber Number
Additional Functions
Continuous operating times
Day and Date
Quick Start Feature
Insufficient charge warning function
Time setting warning function
Overcharging Prevention Function
Fully charged to stopped:
Approximately 6 months
From insufficient charge warning to stop
Approximately 1 week
Eco Drive rechargeable Manganese Titanium battery.
Not user replaceable
This watch is powered not by an ordinary battery, but by converting light energy into
electrical energy.
A rechargeable battery is used in this watch to store electrical energy. This secondary
battery is a clean energy battery that doesn't use any toxic substances such as mercury.
Once fully charged, the watch will continue to run for approximately 6 months without
further charging.
Since the energy source of this watch is light, expose it to light sufficiently to
charge the battery in it.
The battery of this watch is never overcharged by exposing it to light.
If the user wears long-sleeved clothes usually, the watch is covered and its
rechargeable battery may not be charged sufficiently. If so, additional charging
may be necessary when not worn.
The watch should be put on a well-lit place as long as possible for its normal
operation while it is not worn.
The watch should be exposed to light each day to ensure the watch has a sufficient charge
for proper operation.
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Setting the Time and Calendar
If your watch has a screw-type crown, unscrew the crown from the case loosen it before
operation. Be sure to press the crown down and screw in after setting the time and/or
<Setting the time>
Stop the second hand by pulling the crown out to the 2nd click (time setting
Turn the crown to set the time.
The watch will start after the crown is firmly pushed back into its normal position.
<Setting the calendar>
Pull the crown out to the first click (calendar setting position).
Set the desired date by turning the crown counterclockwise.
Set the desired day of the week by turning the crown clockwise.
After you have set the calendar, be sure to press the crown back to its normal
Do not adjust the calendar when the watch is reading between 9:00 pm and 4:00 am.
Otherwise the movement may become damaged and the calendar may not change correctly.
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5. Functions of the Solar Power Watch
If the charge becomes insufficient, a warning function will operate and the display
changes, as below.
• Insufficient Charge Warning Function
The second hand changes to two-secondinterval movement to indicate
insufficient recharging.
Even in such a case, the watch keeps
correct time, but about 1 week after twosecond-interval movement begins, the
watch will stop.
After exposing the watch to light,
recharging takes place and the watch
returns to one-second-interval movement.
• Quick Start Function
The watch will stop if it is completely discharged.
It will begin to operate soon after (within 10 second) it is exposed to light. (However,
the time to start may vary according to the brightness of the light.)
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• Time Setting Warning Function
If the watch stops, subsequent exposure to light
allows the 'quick start' function to start
again, and the second hand moves with a hitch to
indicate that the time incorrect.
In this case, quickly recharge the watch and
reset the time.
Even if the secondary battery is fully
recharged, the hitch movement will continue,
unless the time is reset and the crown is
returned to the normal position
• Overcharging Prevention Function
Once the secondary battery is fully recharged, the overcharging prevention feature comes
into operation and prevents overcharging.
6. Time Required for Recharge
Time required for recharge may vary according to the Caliber number, design (color of the
dial, etc.) and operating environment. The following table will serve an approximate
"The recharging time is the time when the watch is continuously exposed to light."
Running Time
Low Charge
At Full Charge
Start Feature
180 Days
7 Days
Charge Rates from Indoor Light Source
Indoors, Office
(500 lux)
One Day
1.25 Hours
One Second
26 Hours
290 Hours 5
Charge Rates from Outdoor Light Source
Outdoors Cloudy
(10,000 lux)
One Day
One Second
4 Minutes
1.25 hours
14 Hours
Fluorescent at 6" Distance
Incandescent at 20" Distance
(3000 lux)
One Day
One Second
19 Minutes
4 Hours
46 hours
Outdoors Bright Sun
(100,000 lux)
One Day
One Second
2 Minutes
20 Minutes
7 Hours
Full recharging time.......The time for fully recharge from fully discharged state.
One-day usage..............The time required for the watch to run for one day with onesecond-interval movement.
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7. Notes on Recharge
Avoid recharging at high temperatures (over about 60"C/140'F), otherwise the watch will be
damaged during recharging.
• Charging the watch near a light source that easily becomes hot, such as an
incandescent lamp or a halogen lamp.
• Charging in a place that easily becomes hot, such as a dashboard.
When you charge the watch by an incandescent lamp, take a distance about 50cm (20in.) from
the light source to prevent any damage to the movement or any components from the high
temperature radiated by incandescent light bulbs.
8. About the Eco Drive Rechargeable Battery
This watch uses the rechargeable battery, which does not have to be periodically replaced
due to repeated charging and discharging, unlike ordinary batteries.
However, certain maintenance, such as water testing and gasket checks should be performed
at regular intervals. The requirements will vary by model and features.
Never use a battery other than the Eco Drive Manganese Titanium rechargeable battery used
in this watch.
Installing a battery other than the original Eco Drive Manganese Titanium Rechargeable
battery may result in overcharging of the movement causing it to burst. This may result in
damage to the watch and even to the human body.
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Avoid temperature extremes. Exposing your watch to high
temperatures, such as placing it on the dashboard of a vehicle
or use in a hot tub, may cause the watch to malfunction,
shorten battery life or damage certain components. Leaving
the watch in extreme cold temperatures may cause irregular
timekeeping until the watch returns to normal operating
The watch may be worn while playing golf or other activities,
but avoid severe shocks such as dropping it on a hard surface.
No problem should occur from using the watch around
ordinary household electric appliances such as TV sets or
stereos. Keep away from magnets.
Do not expose the watch to chemicals or gases for long
Stains, waterspots and accumulated dirt on the case, crystal
or band should be removed with a soft cloth to prevent
damage and premature wear.
Although water-resistant watches are warranted, steps should
be taken to avoid damage that may result from
accidents or mishandling:
■ Do not operate the crown or push-button in the water or
while the watch is wet. Tighten screw lock crown completely.
■ Should the watch become immersed in water, dry it off
right away. If the watch comes in contact with salt water, be
sure to rinse it thoroughly in warm fresh water to remove any
trace of salt.
■ If a watch is wet from cleaning or by accident, never store it
in a closed 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
moisture deteriorate with time and use. Gaskets, crowns and
other materials should be replaced every year or two to ensure
on the Dial
that water resistant quality remains at factory specifications.
To extend the life and maintain the good appearance of the
metal watch bracelet, the following recommendations are
■ Be aware that since the watch and bracelet is worn next to
the skin, it collects dust and perspiration and becomes soiled if
not cleaned regularly. This is particularly true of the inner parts
of the links or mesh of the bracelet.
■ Soil and rust, when present in a bracelet, are dissolved by
perspiration and can cause staining of cuffs and
irritation of the skin in some instances.
■ Heavy perspiration should be wiped off the watch and
bracelet with a soft dry cloth. The bracelet should be cleaned
occasionally by using an old toothbrush and warm soapy
water after which the soap is thoroughly rinsed with clear water
and the bracelet dried completely. The foregoing manner of
cleaning should not be done if the watch is not water-resistant
but should instead be done by your jeweler.
■ Heavy perspiration, if not removed from a leather strap, can
wash out the natural oils and cause the leather to become dry
and deteriorate. Any moisture should be blotted with a soft dry
cloth or paper towel and the strap allowed to dry naturally.
■ Salt residue and soil can be removed from the leather by
cleaning with a dampened soft cloth and mild soap or saddle
■ Occasionally, the inside surface of the strap should be
cleaned by using a soft cloth dampened with alcohol.
■ The strap should always be worn a little loosely (one finger
space between wrist and strap) to allow air to circulate thus
causing any moisture to evaporate.
■ Rubber straps should be washed frequently with mild soap
and warm water using a soft brush.
■ Thorough cleaning, using the same method, should
especially be done after use in salt water.
■ Solvents, oils, perspiration, tanning lotion and salt can cause
rubber to deteriorate if not removed.
on the
Face washing,
raindrops, etc.
Skin diving
air tanks)
Scuba diving
(diving with
air tanks)
Non water-resistant
watch and must be kept
away from water.
For frequent use with
water. It is not specially
designed for scuba diving.
For skin and scuba diving.
Usable up to the respective
indicated depths.
See instruction book for further information
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An ordinary water-resistant
watch and can withstand
splashes, sweat, rain-drops
and etc. for daily life use.
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Water Resistance
The water-resistant quality of our timepieces is offered in varying degrees depending on the model. This
ranges from non-water resistant models to those suitable for SCUBA diving. Water resistance of our
timepieces is measured in BAR or Barometric Pressure. Each BAR of pressure is equal to 14.5 pounds per
square inch of pressure.
Water resistance is measured when the watch is at a static, or motionless state. As the watch is moved in
water, such as from the motion of swimming, pressure is added from velocity. While you may be swimming in
a pool at surface level, the watch may be experiencing forces equal to that of 100 feet of water pressure
(3 BAR). Diving into a pool can cause forces on the watch to exceed those pressures. As such, you
should always allow a margin of safety when exposing your watch to moisture. Never "push the limit" of
the degree of water resistance of your timepiece.
A primary factor to keep in mind about water resistance is that periodic maintenance is needed to
maintain original factory specifications for water resistance. When a watch is new, it meets
specifications for water resistance as indicated on the case back. However, as the watch ages, the
gaskets that seal the watch become dry and brittle, diminishing its water resistant quality. Exposure to
environments such as chlorinated pools, salt water or soaps from showering can accelerate drying of the
gaskets. We recommend that the gaskets be changed at least every 18 to 24 months to maintain the water
resistant quality of your timepiece. If the watch is frequently exposed to chlorinated pools, soaps salt
water, etc., we recommend that the gaskets be changed on a yearly basis.
From time to time, you may notice condensation that appears then goes away after a short period of time.
This is a normal occurrence and happens primarily from sudden temperature changes. When there are sudden
temperature changes such as entering a cool building from the hot out of doors, or jumping into pool on a
hot day the watch may fog. Conversely, if you go to the cold outdoors from a warm building, fogging may
occur. As long as the fogging clears in a short period of time, there is no need for concern.
Be sure the crown is completely pushed in prior to any contact 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 the entrance of moisture. . If at anytime, you notice
moisture in your timepiece that does not clear in a short period of time, you should send your timepiece
as soon as possible to the nearest Authorized Service Center for inspection.
You can determine the level of water resistance of our watches from the markings on your case-back.
Additionally, models that are water resistant to 100 or 200 meters have an indication on the dial as
well. The case-backs and dials are normally marked as follows:
The case back has no indication of water resistance
This indicates the watch is a non water-resistant model and is not designed for contact with moisture at
all. Caution should be exercised to avoid any contact with moisture, such as when washing your hands or
from a rainstorm.
“Water Resist”
This watch is designed to withstand water from accidental splashing, such as from washing your hands or
rain. Any submersion into water may result in the entrance of moisture.
“Water Resist 10BAR” or “W.R. 10BAR”, Dial marked “WR100”
This watch is designed to withstand water pressure up to 333 feet. This includes water exposure from
accidental splashing and rain, but also from showering, swimming in a pool and snorkeling. Be sure to
rinse the watch with fresh water after exposure to a chlorinated pool, salt water, soaps, etc. After
rinsing with fresh water, be sure to dry the exterior with a soft cloth.
“Water Resist 20BAR” or “W.R. 20BAR”, Dial marked “WR200”
This watch is designed to withstand water pressure up to 666 feet. This includes all exposure to water up
to and including recreational SCUBA diving. Be sure to rinse the watch with fresh water after exposure to
a chlorinated pool, salt water, soaps, etc. After rinsing with fresh water, be sure to dry the exterior
with a soft cloth.
Special Note about Jacuzzis and Hot Tubs
The various components used in the manufacture and assembly of your watch expand at various rates. This
results in a loss of the sealing capabilities of gaskets, which may allow moisture to enter. In addition,
heat from these sources can cause deformation of certain materials leading to mechanical failures. For
these reasons, you should remove your watch before entering a hot tub or Jacuzzi.
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