Casio 5274 - User Manual

Operation Guide 5274
E-9
Charging Time to Recover from Dead Battery
Exposure Level
(Brightness)
Approximate Charging
Time to 1-second Hand
Movement
Approximate Time to
Full Charge
Outdoor sunlight (50,000 lux) 3 hours 24 hours
Sunlight through a window
(10,000 lux)
11 hours 94 hours
Daylight through a window on
an overcast day (5,000 lux)
18 hours 144 hours
Indoor fl uorescent lighting
(500 lux)
175 hours – – –
Important!
The watch will continue to run for about six months after a full charge, even if it is
not exposed to light. For stable operation, however, expose it to light as much as
possible.
E-8
Charging Time
The times below are general guidelines for reference only.
Charging Time to Support Daily Use
Exposure Level (Brightness) Approximate Charging Time
Outdoor sunlight (50,000 lux) 8 minutes
Sunlight through a window (10,000 lux) 30 minutes
Daylight through a window on an overcast day
(5,000 lux)
48 minutes
Indoor fl uorescent lighting (500 lux) 8 hours
E-7
Low Battery Alert
The second hand will jump at two-second intervals to alert you when the charge is
low.
2-second jump
Low charge
Regular Timekeeping Low Battery Alert
Charged
E-6
Caution!
The case of the watch may become quite hot when charging. Guard against burn x
injury after charging.
Avoid charging in the following locations, and anywhere else where the watch may x
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 Charge and Dead Battery Conditions
An alert operation is performed when the battery charge goes low.
E-5
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
light. Keep the watch exposed to light as much as possible.
Charging the Battery
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.
E-4
Contents
E-2 Before Using the Watch for the First Time
E-5 Solar Charging
E-11 Indicators and Crown Operation
E-12 Setting the Current Time and Day
E-12 To adjust the time setting
E-13 To change the day indicator setting
E-14 Using the Stopwatch
E-18 Abnormal Hand Movement or Function
E-20 Specifi cations
E-3
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.
Crown
Loosen
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.
Start
Elapsed time
Current
E-2
Before Using the Watch for the First Time
Crown
Spacer
Depending on your watch model, there may be a spacer x
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
x
Operations” (page E-3) and “To adjust the time setting” (page
E-12) to set up the watch for use.
E-1
ENGLISH
Your watch may differ somewhat from the one shown in the illustration. x
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Summary

Before Using the Watch for the First Time

Crown Operations

Procedures for operating the screw-in crown for water-resistant models and pulling it out.

Rotary Bezel Function

How to use the rotary bezel to align its mark with the minute hand for elapsed time tracking.

Solar Charging and Battery

Solar Charging

Explanation of how the solar panel generates power to charge the built-in battery.

Charging the Battery

Guidance on exposing the watch to light for charging, especially when not worn.

Low Battery Alert

Describes the second hand's two-second jump alert for low battery charge.

Charging Time

Charging Time to Support Daily Use

Approximate charging times needed for daily operation under various light conditions.

Charging Time to Recover from Dead Battery

Estimated times to achieve 1-second hand movement and full charge from a dead battery.

Indicators and Crown Operation

24-hour Hand

Explains the function of the 24-hour hand for indicating the current hour of the day.

Setting the Current Time and Day

Instructions for adjusting the time and changing the day indicator settings.

Using the Stopwatch

Stopwatch Operation

Details on measuring elapsed time, split times, and two finishes using the stopwatch.

Correcting Stopwatch Hand Positions

Procedure to reset and correct the 0 positions of stopwatch hands if they misalign.

Abnormal Hand Movement or Function

System Reset Procedure

Steps to perform a system reset for abnormal hand movement or function.

Specifications

Casio 5274 Specifications

General

Type	Digital
Model	5274
Brand	Casio
Category	Watch
Movement	Quartz
Alarm	Yes
Stopwatch	Yes
Calendar	Yes
Display	Digital
Battery Life	10 years
Backlight	LED