Casio MRG-100/110 Watch User Manual - Module 1516/1569

Important Information

Please read this important information before proceeding.

Battery

In your purchased watch, the power battery is installed at the factory and should be replaced immediately upon the first signs of insufficient power (backlight does not turn on, display is dim) by your nearest CASIO dealer or distributor.

Water Resistance

Watches are classified by ranks (from I to V) according to their water resistance. Please refer to the table below for correct usage of your watch.

Notes for respective ranks:

• I. The watch is not water resistant. Avoid exposure to any moisture.
• II. Do not pull out the crown if the watch is wet.
• III. Do not press the watch buttons underwater.
• IV. If the watch is exposed to salt water, rinse it thoroughly and dry it.
• V. The watch can be used for scuba diving (except for depths requiring a helium-oxygen mixture).

Some water-resistant watches feature leather straps. Do not wear these watches while swimming or engaging in any other activity where the strap may be submerged in water.

Care for Your Watch

• Never attempt to open the case or remove the back cover yourself.
• Replacement of the rubber gasket, which protects the watch from water and dust, should be performed every 2-3 years.
• If moisture enters the watch, have it checked immediately by your nearest CASIO dealer or distributor.
• Do not expose the watch to extreme temperatures.
• Although the watch is designed for normal use, avoid rough handling and do not drop it.
• Do not fasten the strap too tightly. There should be space for a finger between your wrist and the strap.
• To clean the watch and strap, use a dry soft cloth, or a soft cloth dampened with a solution of mild neutral detergent and water. Never use volatile agents (such as gasoline, solvents, spray cleaners, etc.).
• When not using your watch, store it in a dry place.
• Avoid exposing the watch to gasoline, cleaning solvents, spray aerosols, adhesives, paint, etc. Chemical reactions caused by these materials can damage gaskets, the case, and the polish of the watch.
• Some watch models feature silk-screened designs on their straps. Be careful when cleaning such straps to avoid damaging the designs.

For Watches with Plastic Straps...

• You may notice a whitish powdery substance on the strap. This substance is harmless to your skin or clothing and can be easily removed by wiping with a piece of cloth.
• Exposure of a plastic strap to sweat or moisture, or storage in high humidity conditions, can lead to damage, tearing, or cracking of the strap. To ensure a long service life for the plastic strap, wipe it clean of dirt and water with a soft cloth whenever possible.

For Watches with Fluorescent Cases and Straps...

• Prolonged exposure to direct sunlight can cause the fluorescent color to gradually fade.
• Prolonged contact with moisture can cause the fluorescent color to gradually fade. If any moisture gets on the watch surface, wipe it off as soon as possible.
• Prolonged contact with any other wet surface can lead to discoloration of the fluorescent color. Ensure the fluorescent surface is free of moisture and avoid contact with other surfaces.
• Strong friction of a surface with applied fluorescent paint against another surface can cause the fluorescent paint to transfer to that surface.

CASIO COMPUTER CO., LTD. is not liable for any damage that may occur from the use of this watch, and does not accept any claims from third parties.

General Description of Operating Modes

Press button "C" to cycle through the modes in the following sequence: Timekeeping Mode → Alarm Mode → Countdown Timer Mode → Stopwatch Mode → Timekeeping Mode.

Press button "B" in any mode to turn on the display illumination.

Timekeeping Mode

In Timekeeping Mode, press button "D" to switch between 12/24 hour format.

Setting the Time and Date

1. In Timekeeping Mode, press button "A". The seconds display will flash, indicating it is selected for setting.
2. Press button "C" to cycle through the settings in the following sequence: Seconds → Hours → Minutes → Year → Month → Day → Seconds.
3. If you select seconds for adjustment (seconds display flashing), press button "D" to reset the seconds count to 00. If you press button "D" when the seconds count is between 30 and 59, the seconds will be reset to 00 and 1 will be added to the minutes count. If the seconds count is between 00 and 29, the minutes count will not change.
4. To adjust minutes, etc., use button "D" to increase the values. Holding down the button allows values to be changed at a faster rate.
5. The day of the week is set automatically according to the date.
6. The date can be set from January 1, 1995, to December 31, 2039.
7. After setting the date and time, press button "A" to return to Timekeeping Mode.
8. If you do not press any buttons for a certain period, the watch will automatically return to Timekeeping Mode.

Alarm Mode

You can set various daily alarms. At the set time, the alarm will sound for 20 seconds. If the hourly chime is enabled, a short beep will sound at the start of each hour.

Types of Alarms

The type of alarm depends on the information set for the alarm.

• Setting a Daily Alarm: Set the alarm hours and minutes. Set the month field to "-" and the day field to "--". This setting will provide an alarm daily at the set time.
• Setting an Alarm with a Specific Date: Set the alarm month, day, hours, and minutes. This type of alarm provides an alarm at the set time on a specific day.
• Setting a Monthly Alarm: Set the alarm month, hours, and minutes. Select "-" for the day field. This type of alarm provides an alarm daily at the set time for one month.
• Setting a Monthly Recurring Alarm: Set the alarm day, hours, and minutes. Select "-" for the month field. This type of alarm provides an alarm each month on the specified day at the set time.

Setting an Alarm

1. In Alarm Mode, press and hold button "A". The hour digits will flash, indicating they are selected for setting. The alarm is automatically turned on at this point.
2. Press button "C" to cycle through the settings in the following sequence: Hours → Minutes → Month → Day → Hours.
3. Press button "D" to increase the flashing digit. Holding down the button allows values to be changed at a faster rate.
4. The 12/24 hour format corresponds to the format you selected when setting the current time.
5. When using the 12-hour format, be careful to set the time correctly for AM or PM.
6. After completing the settings, press button "A" to return to Alarm Mode.

Turning Alarms and Hourly Chime On/Off

In Alarm Mode, press button "D" to cycle through the following settings: All On → All Off → Daily Alarm Only → Hourly Chime Only.

Timer Mode

The countdown timer can be set from 1 second to 24 hours. When the countdown reaches zero, an alarm sounds.

Setting the Timer Start Time and Auto-Repeat On/Off

1. In Timer Mode, press and hold button "A". The hour digits will flash, indicating they are selected for setting.
2. Press button "C" to cycle through the settings in the following sequence: Hours → Minutes → Seconds → Hours.
3. Press button "D" to increase the selected value. Holding down this button allows values to be changed at a faster rate.
4. If you set the starting countdown value to 24 hours, set it to 0:00'00".
5. After setting the timer start time and turning auto-repeat on or off, press button "A" to return to Timer Mode.

Using the Timer

1. In Timer Mode, press button "D" to start the countdown.
2. Press button "D" again to stop the countdown. You can resume the countdown by pressing button "D".
3. After stopping the countdown, you can press button "A" to reset the countdown time to the starting value.
4. When the countdown reaches zero with auto-repeat off, a 10-second alarm sounds, which can be stopped by pressing any button. The countdown will stop and the timer will automatically reset to the starting value after the alarm.
5. When the countdown reaches zero with auto-repeat on, an alarm sounds, and the countdown immediately restarts from the previously set value. You can stop this countdown by pressing button "D" and force reset the timer to the starting value by pressing button "A".

Turning Auto-Repeat Function On/Off

1. In Countdown Timer Mode, press button "A". The hour digits will flash.
2. Press button "B" to turn the auto-repeat function on or off.
3. After completing the settings, press button "A" to return to Timer Mode.

Timer Mode

The countdown timer can be set from 1 second to 24 hours. When the countdown reaches zero, an alarm sounds.

Setting the Timer Start Time and Auto-Repeat On/Off

1. In Timer Mode, press and hold button "A". The hour digits will flash, indicating they are selected for setting.
2. Press button "C" to cycle through the settings in the following sequence: Hours → Minutes → Seconds → Hours.
3. Press button "D" to increase the selected value. Holding down this button allows values to be changed at a faster rate.
4. If you set the starting countdown value to 24 hours, set it to 0:00'00".
5. After setting the timer start time and turning auto-repeat on or off, press button "A" to return to Timer Mode.

Using the Timer

1. In Timer Mode, press button "D" to start the countdown.
2. Press button "D" again to stop the countdown. You can resume the countdown by pressing button "D".
3. After stopping the countdown, you can press button "A" to reset the countdown time to the starting value.
4. When the countdown reaches zero with auto-repeat off, a 10-second alarm sounds, which can be stopped by pressing any button. The countdown will stop and the timer will automatically reset to the starting value after the alarm.
5. When the countdown reaches zero with auto-repeat on, an alarm sounds, and the countdown immediately restarts from the previously set value. You can stop this countdown by pressing button "D" and force reset the timer to the starting value by pressing button "A".

Turning Auto-Repeat Function On/Off

1. In Countdown Timer Mode, press button "A". The hour digits will flash.
2. Press button "B" to turn the auto-repeat function on or off.
3. After completing the settings, press button "A" to return to Timer Mode.

Stopwatch Mode

The Stopwatch Mode allows you to measure elapsed time, split times, and dual finishes.

The maximum measurable time is 23 hours, 59 minutes, 59.99 seconds.

a) Measuring Elapsed Time

D (Start) → D (Stop) → D (Restart) → D (Stop) → A (Reset)

b) Measuring Split Times

D (Start) → A (Split) → A (Resume) → D (Stop) → A (Reset)

c) Dual Finish

D (Start) → A (Split - First Finish) → D (Second Finish - Display shows 1st finisher's time) → A (Cancel Split - Display shows 2nd finisher's time) → A (Reset)

Technical Specifications

Accuracy at Normal Temperature

±15 seconds per month

Timekeeping Mode

Hour, Minute, Second, AM/PM indicator (P), Month, Day, Day of the week.

Calendar System

Auto calendar from 1995 to 2039.

Alarm Mode

Various daily alarms, hourly chime.

Stopwatch Mode

• Unit of Measurement: 1/100 sec. (for the first 60 minutes), 1 second (after 60 minutes).
• Maximum Measurement Range: 23 hours 59 minutes 59.99 seconds.
• Measurement Modes: Lap time, split time, dual finish.

Timer Mode:

• Unit of Measurement: 1 second.
• Measurement Range: 1 second – 24 hours.
• Other: Auto-repeat function.

Other:

Illumination (backlight)

Battery

One lithium battery (Module 1516: type CR1220, Module 1569: type CR1216).

Service Life

For Module 1516: approximately 18 months. For Module 1569: approximately 15 months, based on 3.5 seconds of illumination per day and 20 seconds of alarm usage per day.

Product Information

Name:

Electronic / Electro-mechanical quartz wristwatches (Men's/Women's)

Brand:

CASIO

Manufacturer:

CASIO COMPUTER Co.,Ltd. (CASIO Computer Co., Limited)

Manufacturer Address:

6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan

Importer:

OOO "Casio", 127055, Moscow, ul. Suchevskaya, d.27, str. 1, Russia

Country of Origin:

Japan

Warranty Period:

1 year

Address of Authorized Organization for Claims:

As indicated on the warranty card.

Product complies with GOST 26270-98 (cl.4.35)

Certificate of Conformity No. POCC JP. АЯ 46.Д00003