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Casio MRW-S300H series Operation Manual

Casio MRW-S300H series Operation Manual

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MA1602-EA
Your watch may differ somewhat from the one shown in the illustration.
Before Using the Watch for the First Time
Depending on your watch model, there may be a spacer installed
at the factory around the crown. If your watch has a spacer, you
should remove the spacer before using the watch.
After removing the spacer, use the procedures in "Crown
Operations" and "To adjust the time setting" to set up the watch
for use.
To adjust the time setting
When the second hand is at 12 o'clock, pull
the
Crown
out to Click 2.
Rotate the
to change the time setting.
Crown
Push the
back in.
Crown
To change the day setting
Pull the
out to Click 1.
Crown
Rotate the
Crown
towards you to set the day.
Push the
back in.
Crown
Crown Operations
Some water-resistant models (100 meters, 200 meters)
have a screw-in crown. When you need to perform a crown
operation, rotate it towards you to unscrew it. Then pull the
crown out. Avoid applying undue force when pulling. The watch
loses its water resistance while the crown is unscrewed. After
performing a crown operation, fully screw the crown back in.
If your watch has a rotary bezel...
You can rotate the bezel to align its ▼ mark with the
minute hand. Then you will be able to tell how much
time has elapsed since aligning the ▼ mark.
Specifi cations
Accuracy at normal temperature: ±20 seconds a month
Other: Low battery alert
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 3 months (no exposure to light after a full charge)
Operation Guide 5330/5493
Click 2
Click 1
30
Crown
Note
When changing the time,
move the minute hand four
or fi ve minutes past your
fi nal setting, and then back it
up to the setting you want.
Note
The day setting uses a
31-day month. Make
adjustments for months of
shorter lengths.
Avoid changing the day
setting between the hours
of 9 p.m. and 1 a.m.
Otherwise, the day may
not change correctly at
midnight.
Current

Solar Charging

A solar panel generates electrical power that charges a built-in (secondary) battery.
The entire face is a solar panel, so power is generated when the face is exposed to
Spacer
light. Keep the watch exposed to light as much as possible.
Charging the Battery
Crown
Caution!
The case of the watch may become quite hot when charging. Guard against burn
injury after charging.
Avoid charging in the following locations, and anywhere else where the watch may
become very hot.
− On the dashboard of an automobile parked in the sun
− Close to an incandescent light source or other sources of heat
− Locations exposed to direct sunlight for long periods
Low Battery Alert
The second hand will jump at two-second intervals to alert you when the charge is
low.
Charging Time
The times below are general guidelines for reference only.
Charging Time to Support Daily Use
Exposure Level (Brightness)
Outdoor sunlight (50,000 lux)
Sunlight through a window (10,000 lux)
Daylight through a window on an overcast day
(5,000 lux)
Indoor fl uorescent lighting (500 lux)
Crown
Charging Time to Recover from Dead Battery
Exposure Level (Brightness)
Loosen
Outdoor sunlight (50,000 lux)
Sunlight through a window (10,000 lux)
Start
Daylight through a window on an
overcast day (5,000 lux)
Elapsed time
Indoor fl uorescent lighting (500 lux)
Note
Actual charging time depends on environmental conditions.
When you are not wearing the watch, leave it where it is exposed
to light. For stable operation, expose the watch to at least a half
day of light per month.
When wearing the watch, try to keep your clothing from blocking
its face (solar panel). Charging effi ciency is reduced signifi cantly
even if the face is blocked only partially.
Regular Timekeeping
Low Battery Alert
Low charge
Charged
2-second jump
Approximate Charging Time
Approximate
Charging Time to
1-second Hand
Movement
3 hours
11 hours
17 hours
168 hours
8 minutes
30 minutes
48 minutes
8 hours
Approximate Time
to Full Charge
20 hours
72 hours
116 hours
– – –
1

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