CASIO Module 1188 User Manual

Technical Specifications

Accuracy: + 15 seconds per month under normal temperature conditions.

Current Time Mode: Hours, minutes, seconds, AM/PM indicator ('P'), month, day, and day of the week.

Time Display System: Switchable between 12-hour and 24-hour formats.

Calendar System: Auto-calendar with setting for February 28 days.

Alarm Signals Mode: Daily alarm, hourly time signal.

Countdown Timer Alarm Mode:

• Unit of measurement: 1/10 second.
• Set time: From 1 second to 60 minutes.

Stopwatch Mode:

• Unit of measurement: 1/100 second.
• Maximum measuring range: 23 hours 59 minutes 59.99 seconds.
• Measurement modes: Elapsed time, split time, 1st-2nd place times.
• Other functions: Auto-start function, preset time function.
• Other functions: Illumination function (flashes when alarm sounds).

Power: Single lithium battery (CR2016 type).

Battery Life: Approximately 2 years (based on 20 seconds of alarm sound per day and 3 seconds of illumination per day).

Illumination Impact on Battery Life:

• 5 times per day: Approx. 16 months.
• 10 times per day: Approx. 10 months.

Product Information

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

Certificate of Conformity No. ROSS JP. АЯ46.Д00003

Important Information Before Use

Battery: If you notice faint display or lack of illumination, replace the battery at a CASIO dealer. The battery included is for initial testing and may have a shorter life than a new one.

Water Protection: Watches are classified by water resistance levels (I to V). Refer to the table below for usage guidelines.

Notes on Water Resistance:

• Rating I: Not water-resistant. Avoid all moisture.
• Rating III: Do not press buttons underwater.
• Rating IV: Buttons can be pressed underwater, except for those in recessed areas. Rinse with fresh water and dry thoroughly if exposed to salt water.
• Rating V: Suitable for scuba diving (except for depths requiring helium-oxygen gas mixtures).
• Some water-resistant models have leather straps. Do not wear them while swimming or in water.

Watch Care

• Never attempt to open the watch case or remove the back cover.
• The rubber gasket protecting against water and dust should be replaced every 2-3 years.
• If water enters the watch, have it checked immediately by a CASIO dealer.
• Avoid exposing the watch to extreme temperatures.
• Handle the watch with care to avoid drops or rough treatment.
• Do not overtighten the strap; a finger should fit between the strap and your wrist.
• Clean the watch and strap with a dry soft cloth or a soft cloth dampened with a mild neutral detergent solution. Avoid volatile substances like gasoline, solvents, or aerosol cleaners.
• Store the watch in a dry place when not in use.
• Avoid contact with gasoline, cleaning solvents, aerosol sprays, adhesives, paint, etc., as these can damage gaskets, case, and finish.
• Some models have silk-screened designs on the strap. Clean gently to avoid damaging the designs.

Operating Modes and Functions

General Description

• Press the [C] button to switch between modes. See below for mode descriptions.
• Press the [D] button in any mode for approximately 3 seconds of illumination. The backlight can be set to flash with alarms.

Timekeeping Mode

Display Elements: Month, Day of Week, Date, Hour, Minute, Second, AM/PM indicator ('P').

Setting Current Time and Date:

1. In Timekeeping Mode, press [A]. The seconds digits will flash, indicating they can be set.
2. Press [C] to cycle through the digits to be set: Seconds, Day of Week, Hours, Date, Minutes, Month.
3. When seconds are flashing: Press [E] to reset seconds to '00'. If seconds are 30-59 when [E] is pressed, 1 minute is added. If seconds are 00-29, minutes remain unchanged.
4. When other digits are flashing: Press [E] to increase, [B] to decrease. Hold to speed up. For Day of Week, [E] advances, [B] goes back.
5. After setting, press [A] to return to the normal Timekeeping Mode display.

Notes:

• The watch does not account for leap years. Manually adjust the date on February 29th.
• If no button is pressed for several minutes while digits are flashing, the display returns to normal Timekeeping Mode.

Backlight

The backlight illuminates the display for approximately 3 seconds. It can be set to flash with daily alarms, countdown timer alarms, stopwatch, and alarm signals. The electro-luminescent light source may dim with prolonged use.

To Turn Backlight Function On/Off:

In Timekeeping Mode, press and hold [B] for one or two seconds. An indicator will show if the function is ON or OFF.

• The backlight indicator remains visible in all modes.
• This function only controls the backlight's flashing behavior with signals; it does not affect the sound of alarms.
• Pressing [D] at any time provides about 3 seconds of illumination, regardless of the backlight function setting.
• A slight sound may be heard when the backlight is on due to the vibration of the electro-luminescent source; this is normal.

Alarm Signals Mode

Display Elements: Hourly time signal indicator, Daily alarm indicator, Current Time.

Hourly Time Signal: Sounds at the start of each hour.

Daily Alarm: Sounds for 20 seconds at the set time each day. Press any button to stop.

Setting Daily Alarm Time:

1. In Alarm Signals Mode, press [A]. The hour digits will flash, and the daily alarm will automatically turn ON.
2. Press [C] to cycle through the digits to be set: Hours, Minutes.
3. Press [E] to increase, [B] to decrease. Hold to speed up. The 12/24-hour format matches the Timekeeping Mode setting. Be mindful of AM/PM if using 12-hour format (indicated by 'P').
4. After setting, press [A] to return to Alarm Signals Mode.

To Turn Daily Alarm and Hourly Time Signal On/Off:

In Alarm Signals Mode, press [B] to cycle through the following settings:

• Both signals ON
• Both signals OFF
• Daily Alarm ON only
• Hourly Time Signal ON only

To Test Alarm Sound:

In Alarm Signals Mode, press and hold [E].

Countdown Timer Mode

The countdown timer can be set from 1 second to 60 minutes. An alarm sounds for 10 seconds when the countdown reaches zero. Pressing any button stops the alarm.

Setting Countdown Time:

1. In Countdown Timer Mode, press [A]. The hour digits will flash.
2. Press [C] to cycle through the digits to be set: Hours, Minutes, Seconds.
3. Press [E] to increase, [B] to decrease. Hold to speed up.
4. After setting, press [A] to return to Countdown Timer Mode.

Using the Countdown Timer:

1. In Countdown Timer Mode, press [E] to start the timer.
2. Press [E] again to stop the timer. Pressing [E] again resumes the countdown.
3. After the alarm sounds, press [B] to reset the timer to the preset time. The timer automatically resets to the preset time after the alarm finishes.

Stopwatch Mode

Measures elapsed time, split times, and 1st-2nd place times. Maximum range is 23 hours 59 minutes 59.99 seconds.

Measuring Elapsed Time:

1. Press [E] to start the stopwatch.
2. Press [E] to stop the stopwatch. Pressing [E] again resumes timing.
3. Press [B] to reset the stopwatch to 00'00"00.

Measuring Split Time:

1. Press [E] to start the stopwatch.
2. Press [B] to display the elapsed time (split time). The stopwatch continues timing internally.
3. Press [B] again to clear the split time display and resume showing the total elapsed time.
4. Repeat steps 2 and 3 as needed.
5. Press [E] to stop the stopwatch.
6. Press [B] to reset the stopwatch to 00'00"00.

Measuring 1st-2nd Place Times:

1. Press [E] to start the stopwatch.
2. Press [B] when the first runner finishes to record their time.
3. Press [E] when the second runner finishes.
4. Press [B] to display the second runner's time.
5. Press [B] again to clear the display.

Auto-Start Function:

Starts a 5-second countdown before the stopwatch begins timing. An audible signal sounds each second for the last three seconds.

Using the Auto-Start Function:

1. In Stopwatch Mode, with the display at 00'00"00, press [B]. A 5-second countdown appears.
2. Press [E] to start the countdown. An audible signal sounds, and the stopwatch starts when the countdown reaches zero.
3. Press [B] during the countdown to return to the initial countdown screen.
4. Pressing [E] during the 5-second countdown immediately starts the stopwatch.

Preset Time Function:

When the stopwatch reaches a preset time, an alarm sounds for 5 seconds. This function automatically deactivates when the preset time is set to 00'00"00.

Setting Preset Time:

1. In Stopwatch Mode, with the display at 00'00"00, press [A]. The hour digits will flash.
2. Press [C] to cycle through the digits to be set: Hours, Minutes, Seconds.
3. When digits are flashing, press [E] to increase, [B] to decrease. Hold to speed up.
4. Maximum preset time: 23 hours 59 minutes 59 seconds.
5. To reset to 00'00"00, press [B] and [E] simultaneously.
6. After setting, press [A] to return to Stopwatch Mode. A 'TARGET' indicator will appear on the stopwatch display.

Care for Polymeric Straps

• A white powdery substance may appear on the strap. This is harmless and can be wiped off.
• Prolonged exposure to sweat or moisture, or storage in high humidity, can damage the strap. Wipe it clean frequently with a soft cloth.

Care for Fluorescent Cases and Straps

• Direct sunlight can cause fluorescent colors to fade over time.
• Moisture can cause fluorescent colors to fade. Wipe off moisture immediately.
• Contact with other damp surfaces can cause discoloration. Keep fluorescent surfaces dry and away from other surfaces.
• Rubbing fluorescent surfaces can transfer the color.

CASIO COMPUTER CO., LTD. is not liable for any damage or claims arising from the use of this watch.