Casio Module No. 5028 User Manual

Water Resistance

The watch's water resistance is rated according to ISO 2281. The specific rating indicates its suitability for various water-related activities:

• WR (Water Resistant): Suitable for brief contact with water.
• 5 Bar (50 Meters): Suitable for showering and brief swimming.
• 10 Bar (100 Meters): Suitable for regular swimming and snorkeling.
• 20 Bar (200 Meters): Suitable for scuba diving (excluding depths requiring helium-oxygen mixtures).

Important Notes on Water Protection:

• Never press buttons underwater.
• Never adjust hands underwater.
• Never unscrew the crown underwater.
• If exposed to saltwater, rinse thoroughly with fresh water and dry completely.
• Avoid wearing leather strap watches while swimming or exposing leather straps to prolonged water contact.

Watch Care and Maintenance

• Do not attempt to open the watch case or remove the back cover yourself.
• The water-resistant gasket should be replaced every 2-3 years.
• If moisture enters the watch, have it inspected immediately by a CASIO dealer or distributor.
• Avoid exposing the watch to extreme temperatures.
• Wear the watch carefully and avoid dropping it.
• Ensure the strap is not fastened too tightly; a finger should fit between your wrist and the strap.
• 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 or solvents.
• Store the watch in a dry place when not in use.
• Prevent contact with gasoline, cleaning solvents, spray aerosols, adhesives, or paint, as these can damage gaskets, the case, and the finish.
• Be cautious when cleaning straps with silk-screened designs to avoid damage.

Material-Specific Care

Plastic Straps

A white powdery substance may appear on plastic straps; this is harmless and can be wiped away. Sweat, moisture, or high humidity can damage plastic straps. Wipe them clean with a soft cloth regularly.

Fluorescent Cases and Straps

Prolonged exposure to direct sunlight or moisture can cause fluorescent colors to fade or discolor. Wipe off any moisture promptly. Friction with other surfaces may transfer fluorescent paint.

Condensation may form inside the glass during rapid temperature changes; this is a normal physical phenomenon and not a defect.

CASIO COMPUTER CO., LTD. is not liable for any damage incurred during watch use.

Water Resistance Classification

Watches are classified by rating (I to V) based on their water resistance. Consult the table below to determine correct usage:

General Description of Operating Modes

Pressing button "C" cycles through the following modes: Timekeeping -> Moon Phase -> Stopwatch -> Countdown Timer -> Alarm -> Dual Time -> Analog Time -> Timekeeping.

Press button "B" in any mode to activate the backlight.

Timekeeping Mode

Press button "D" to switch between 12/24 hour formats. "A" indicates AM, "P" indicates PM in 12-hour format.

Setting Time and Date

1. Press button "A" in Timekeeping Mode. Seconds will flash to indicate setting mode.
2. Press "C" to cycle through settings: Seconds -> DST -> Hours -> Minutes -> Year -> Month -> Day.
3. Press "D" to reset seconds to 00. If seconds are 30-59, they reset to 00 and minutes increment. If 00-29, minutes do not change.
4. Use "D" to increase and "B" to decrease values. Holding buttons speeds up changes.
5. Day of the week is set automatically. Year can be set from 2000-2099.
6. Press "D" to toggle DST ON/OFF.
7. Press "A" twice to return to Timekeeping Mode. The watch will auto-return if inactive.

Moon Phase Mode

View moon phase and age, and tidal graphs for specific dates and times.

Viewing Moon/Tide Data

• Press "A" to switch between tidal graph and moon data.
• The display defaults to 6 AM data for the current day.
• Press "D" to advance to the next hour (tides) or date (moon data).

Selecting Specific Date for Data

1. In Moon Phase Mode, press and hold "A" until the year flashes.
2. Press "C" to cycle through Year -> Month -> Day.
3. Use "D" to increase and "B" to decrease values.
4. Press "A" when finished.

Inputting Location Data

Accurate tidal and moon data requires correct location settings (GMT difference, longitude, tidal interval). These can be found in the table below.

1. In Timekeeping Mode, press and hold "A" until seconds flash.
2. Press "A" to advance to GMT difference setting.
3. Press "C" to cycle through: GMT difference -> Longitude -> Longitude unit (E/W) -> Tidal interval -> Tidal interval minutes.
4. Use "D" to increase and "B" to decrease values. Longitude can be set from 0 to 180 degrees. Use "D" to switch between E and W.
5. Press "A" when finished.

Analog Time Mode

Analog time is synchronized with the digital time. If they desynchronize:

1. In Analog Time Mode, press and hold "A" until the time display flashes.
2. Use "D" to set the time. Each press of "D" advances time by 20 seconds. Holding "D" with "B" pressed speeds up adjustment.
3. Press "A" when finished.
4. Press "C" to return to Timekeeping Mode.

Stopwatch Mode

Measure elapsed time, split times, and two-person finishes. Maximum range: 23h 59m 59.99s.

• Elapsed Time: D (Start) – D (Stop) – D (Restart) – D (Stop) – A (Reset).
• Split Times: D (Start) – A (Split, "SPL" indicator) – A (Restart) – D (Stop) – A (Reset).
• Two-Person Finish: D (Start) – A (Split, 1st finish) – D (Stop, 2nd finish) – A (Cancel split, 2nd finish) – A (Reset).

Countdown Timer Mode

Set timer from 1 minute to 24 hours. A long beep sounds when countdown reaches zero.

Setting Timer Modes

1. Press and hold "A". Hour digits will flash.
2. Press "C" to cycle through: Hours -> Minutes -> Auto-repeat.
3. Use "D" and "B" to set start time. For 24-hour countdown, set to "0:00".
4. Press "D" to toggle auto-repeat ON/OFF.
5. Press "A" to finish and return to Alarm Mode.

Using the Timer

Press "D" to start/stop countdown. Press "D" again to resume. In auto-repeat mode, it restarts automatically. If auto-repeat is off, a 10-second beep sounds upon completion, stoppable by any button. Press "A" to reset to start value.

Alarm Mode

Set up to three alarms. Alarms sound for 10 seconds. Hourly chime provides a short beep on the hour. Snooze alarm repeats 7 times every 5 minutes.

Setting Alarms

1. Press "D" to select alarm type: -1 (regular/snooze) or -2-3:00 (hourly chime).
2. Press and hold "A". Hour digits flash, turning the alarm ON.
3. Alarm Types:
   • Daily: Enter "-" for month/day.
   • Date: Enter "-" for month.
   • Monthly: Enter "-" for month.
   • 1-Month: Enter "-" for day.
4. Press "A" to finish.

Checking Alarm Sound

Press "D" in Alarm Mode to check the sound.

Turning Alarms/Chime ON/OFF

1. Press "D" to select alarm.
2. Press "A" to toggle ON/OFF. "ALM" indicates a regular alarm; "SIG" indicates hourly chime.

Snooze Alarm

1. Press "D" to select alarm -1.
2. Press "A" to cycle modes: Regular ON -> Snooze ON -> All OFF. "SNZ ALM" indicates snooze is active.

Dual Time Mode

View time in another time zone.

Setting Dual Time

1. In Dual Time Mode, press and hold "A" until DST flashes.
2. Press "C" to cycle through: DST mode -> Hours -> Minutes.
3. Use "D" to increase and "B" to decrease values. Holding buttons speeds up changes.
4. The 12/24 hour format matches the Timekeeping Mode setting. Ensure correct AM/PM in 12-hour format.

Backlight

Press "B" in any mode to activate the backlight. It turns off automatically when an alarm sounds.

The electroluminescent (EL) backlight's power decreases over time. An audible beep during illumination is normal vibration, not a malfunction. Backlight visibility is reduced in direct sunlight. Frequent use shortens battery life.

Backlight Duration Adjustment

1. In Timekeeping Mode, press and hold "A" until seconds flash.
2. Press "B" to select duration: 1.5 seconds or 3 seconds.
3. Press "A" twice when finished.

Button Sound ON/OFF

In any mode, press and hold "C" to toggle button sounds ON/OFF.

Tidal Interval Table

This table provides tidal interval data for various cities worldwide, crucial for accurate tidal graph readings in the Moon Phase Mode. It includes the city name, standard and daylight saving time differences from GMT, longitude, and the tidal interval in hours and minutes.

Note: A decree in Russia in 2011 and subsequent laws in 2014 changed time zones and abolished daylight saving time. Users in Russia should consider these changes when setting their watches.

Example Entries:

• Anchorage: GMT -9/-8, 149°W, Tidal Interval: 5:40
• Boston: GMT -5/-4, 71°W, Tidal Interval: 11:20
• Tokyo: GMT +9/+10, 140°E, Tidal Interval: 5:20

Technical Specifications

Product Information

• Product Name: Electronic / Electro-mechanical Quartz Wristwatches (Men's/Women's)
• Brand: CASIO
• Manufacturer: CASIO COMPUTER Co., Ltd.
• Manufacturer Address: 1-6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan
• Importer: LLC "Casio", Russia, Moscow, Butyrskaya St., bld. 77
• Warranty Period: 1 year
• Authorized Service Center for Claims: See warranty card.