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MA2103-EA
© 2021 CASIO COMPUTER CO., LTD.
Contents
OPUM-F
Watch Operation Guide 5657
1

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Summarization of Contents

Precautions
Operating Precautions
General advice for safe and proper use of the watch, including water resistance and band care.
Water Resistance
Details on water resistance ratings and usage precautions for different activities.
Band
Care and precautions for watch bands to prevent irritation and damage.
Temperature
Risks of extreme temperatures on watch function and LCD display.
Impact
How impact can affect watch performance and specific shock-resistant designs.
Magnetism
Effects of strong magnetism on watch timekeeping and electronic components.
Electrostatic Charge
How electrostatic charge can affect time display and electronic components.
Chemicals
Precautions regarding contact with chemicals to prevent damage to watch parts.
Storage
Proper storage procedures to prevent damage and discoloration of the watch.
Resin Components
Care for resin parts to prevent discoloration and deterioration.
Leather Band
Care for leather bands to prevent discoloration and damage.
Metal Components
Cleaning and care for metal parts to prevent rust and maintain appearance.
Bacteria and Odor Resistant Band
Benefits and care of bacteria/odor resistant bands for comfort and hygiene.
Liquid Crystal Display
Notes on display visibility and company responsibility disclaimer.
User Maintenance
General advice for keeping the watch clean and in good operating condition.
Dangers of Poor Watch Care
Risks associated with neglecting watch maintenance, like rust and premature wear.
Battery
Information on the rechargeable battery and its maintenance requirements.
Mobile Link Precautions
Safety and operational guidelines for using mobile link features.
Stopping Radio Wave Emission by This Watch
How to stop radio wave emission for specific locations like hospitals.
Disabling Auto Time Adjustment
How to disable automatic time adjustment between watch and phone.
Before Getting Started...
General Guide
An overview of the watch and its convenient features.
Watch Features
Introduces key functionalities like Phone Linking, World Time, Alarm, Stopwatch, Timer.
Watch Face and Display Indicators
Explanation of the watch face elements and display icons.
Navigating Between Modes
Cycling Between Timekeeping Mode Digital Display Contents
How to cycle through different display information in Timekeeping Mode.
Shifting Hands to Read the Digital Display
How to move analog hands for better visibility of digital display.
Connecting with a Phone
Steps to establish a connection between the watch and a phone.
Charging
How the watch is powered by a solar panel and rechargeable battery.
Linking with a Phone
Getting Ready
Steps to prepare the watch and phone for pairing.
Auto Time Adjustment
How the watch automatically adjusts time via phone connection.
Important!
Reasons why auto time adjustment might not occur.
Triggering Immediate Time Adjustment
How to manually initiate time adjustment via phone connection.
Configuring Reminder Settings
Configuring World Time Settings
How to set World Time cities and auto summer time switching.
Selecting a World Time City
Steps to choose a city for World Time display.
Configuring the Summer Time Setting
How to set summer time for World Time cities (Auto, ON, OFF).
Swapping Your Home Time and World Time
Adjusting Hand Alignment
How to correct analog hand alignment using G-SHOCK Connected.
Phone Finder
How to use the watch to find a misplaced phone.
Configuring Watch Settings
How to configure alarm, timer, and other settings via G-SHOCK Connected.
Changing the Home City Summer Time Setting
Checking the Watch Charge Level
How to check the watch's battery charge level using G-SHOCK Connected.
Recording Your Current Location (TIME & PLACE)
How to record current location and time/date on the phone.
Viewing a Recorded Location on a Map
How to view recorded locations on a map via the G-SHOCK Connected app.
Connection
Information on connecting the watch with a paired phone.
Important!
Troubleshooting tips for connection issues with G-SHOCK Connected app.
Disconnecting from Your Phone
Unpairing
Steps to remove pairing information from both watch and phone.
If you purchase another phone
What to do when connecting to a new phone.
Time Adjustment
How to adjust date and time settings using phone or watch operations.
Important!
Precautions when using the watch in areas with radio signal restrictions.
Using Watch Operations to Adjust the Time Setting
Setting a Home City
How to select a Home City and configure its summer time setting.
Setting the Time/Date
Manual procedure for setting the watch's time and date.
Switching between 12-hour and 24-hour Timekeeping
How to switch the time display format between 12-hour and 24-hour.
Using the Watch in a Medical Facility or Aircraft
World Time
How to look up current times in different global cities and UTC.
Using G-SHOCK Connected to Configure World Time City Settings
How to set World Time cities using the G-SHOCK Connected app.
Checking World Time
How to view the current time for selected World Time cities.
World Time City Setting
How to select a World Time city and configure its summer time.
Swapping Your Home Time and World Time
Alarm
Information on setting and using alarms and the hourly time signal.
Using G-SHOCK Connected to Configure Alarm Settings
How to set alarms using the G-SHOCK Connected app.
Configuring Alarm Settings
Step-by-step guide to setting individual alarms.
Enabling the Hourly Time Signal
Moving to Another Time Zone
Procedure to easily change day and time settings for travel.
Turning Off an Alarm or the Hourly Time Signal
How to stop an active alarm or hourly time signal.
Stopwatch
Measuring Elapsed Time
How to measure continuous elapsed time using the stopwatch.
Split Times and Lap Times
How to take split time and lap time readings.
Measuring a Split Time
Detailed steps for measuring split times.
Timer
Using the Timer
How to operate the countdown timer.
Setting the Countdown Start Time
How to set the start time for the countdown timer.
Using G-SHOCK Connected to Configure Timer Settings
How to set timer start times using the G-SHOCK Connected app.
Reminder
Hand Alignment Adjustment
How to adjust analog hand alignment manually.
Using G-SHOCK Connected to Adjust Hand Alignment
How to adjust hand alignment using the G-SHOCK Connected app.
Adjusting Hand Alignment
Step-by-step guide for manual analog hand alignment.
Other Settings
Changing the Date Display Format
How to change the format of the date display (e.g., M.DD or DD.M).
Specifying the Day of the Week Language
How to select the language for displaying the day of the week.
Enabling the Button Operation Tone
How to enable or disable the button press confirmation tone.
Configuring Power Saving Function Settings
How to enable or disable the watch's power saving features.
Returning the Watch to Its Factory Default Settings
City Table
A table listing cities, their time zones, and offsets.
Summer Time Table
Information on summer time start and end dates for various cities.
Specifications
Mobile Link
Details on mobile link features like auto time correction and phone finder.
Troubleshooting
I can't pair the watch with a phone.
Solutions for issues establishing an initial connection between watch and phone.
I can't reconnect the watch and phone.
Steps to resolve issues when the watch fails to reconnect with the phone.
Phone-Watch Connection
Auto Time Adjustment by Bluetooth Connection (Time Adjustment)
When the watch performs time adjustments and troubleshooting.
Alarm and Hourly Time Signal
Hand Movement and Indications
How to determine the current mode and what causes hand movement.

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