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Explains mode switching, display illumination, and auto-off.
Details the steps to set the watch's time and date parameters.
Describes how to activate or deactivate the Flash Alert feature.
Instructions for setting the alarm hour, minute, month, and day.
How to silence the alarm once it sounds.
Enables or disables the alarm and hourly time signal functions.
Guides users on setting the duration for the countdown timer.
Explains how to start, stop, and reset the countdown timer.
How to enable or disable the auto-repeat function for the timer.
Steps for recording the total duration of an event.
Instructions for capturing intermediate times during an event.
How to record times for the first and second finishers.
Guidelines for maintaining water resistance and usage examples.
Advice on band care, avoiding irritation, and signs of wear.
Information on how temperature extremes affect watch performance.
How impacts affect the watch and its shock resistance.
Effects of magnetism and static electricity on watch operation.
How chemicals and dirt can damage watch components.
Proper storage to prevent discoloration and damage to resin parts.
Guidelines for maintaining leather bands, avoiding damage and discoloration.
Instructions for cleaning metal parts and preventing rust.
Information on the features and care of the odor-resistant band.
Tips for maintaining readability of the watch display.
Risks associated with neglecting watch cleaning and maintenance.
Recommends professional service for battery replacement.
Information on factory-installed batteries and low power indicators.
This document describes the operation and maintenance of a CASIO digital watch, model 3525.
The CASIO watch is a multi-functional digital timepiece designed for daily use, offering several modes to track time, set alarms, use a countdown timer, and operate a stopwatch.
Timekeeping Mode: This is the primary mode, displaying the current time, date, day of the week, and month. The watch supports both 12-hour and 24-hour time formats, which can be toggled by the user. The full auto-calendar is pre-programmed from the year 2000 to 2099, automatically adjusting for different month lengths and leap years. The time and date can be easily set by selecting the desired digits (seconds, hour, minute, day, month, year) and adjusting them. The seconds can be reset to "00," and if the seconds count is between 30 and 59, the minutes are advanced by one when reset.
Alarm Mode: The watch features an alarm function that can be configured with various settings. Users can set a daily alarm, which sounds at a specific hour and minute every day. Alternatively, a date alarm can be set to sound on a specific month, day, hour, and minute. There's also a 1-month alarm, which sounds daily for a specific month, and a monthly alarm, which sounds on a specific day of the month every month. The alarm sounds for 20 seconds when activated and can be stopped by pressing any button. The watch also includes an Hourly Time Signal, which causes it to beep every hour on the hour. Both the alarm and hourly time signal can be independently switched on or off.
Timer Mode: A countdown timer is integrated, allowing users to set a countdown from 1 second up to 24 hours. The timer can be set with precision, adjusting hours, minutes, and seconds. When the countdown reaches zero, an alarm sounds for 10 seconds or until any button is pressed. The timer also features an auto-repeat function, which, when enabled, automatically resets and restarts the countdown once it reaches zero, with the alarm sounding at each completion. This is useful for repetitive tasks. The countdown can be started, stopped, and reset to its initial value.
Stopwatch Mode: The stopwatch function is designed for measuring elapsed time, split times, and first/second place finishes. It has a measurement capacity of 23 hours, 59 minutes, and 59 seconds. For the first 60 minutes, the display shows minutes, seconds, and 1/100th of a second, then switches to hours, minutes, and seconds thereafter. Users can start, stop, and resume the stopwatch. Split times can be recorded, allowing the user to view intermediate times without stopping the main measurement. The stopwatch can also be used to time two finishers, recording the time for the first finisher and then the second. The stopwatch can be cleared to all zeros after use.
Backlight: The watch is equipped with an LED backlight for illuminating the display in low-light conditions. Pressing the appropriate button at any time activates the backlight.
Flash Alert: This feature enhances the alarm, timer, and hourly time signal by causing the backlight to flash in conjunction with the audible alerts. This provides a visual cue in addition to the sound. Flash Alert can be enabled or disabled by the user and an indicator on the display shows its status.
Mode Navigation: The watch uses a simple button-based interface for navigating between its various modes. A dedicated button allows users to cycle through Timekeeping, Alarm, Timer, and Stopwatch modes.
Setting Adjustments: For setting time, date, alarm, or timer values, digits flash to indicate they are selected for adjustment. Another button is used to increase the selected number, with a high-speed increment available by holding the button down. This intuitive method simplifies the configuration process.
Automatic Return to Timekeeping Mode: After performing operations in any mode, the watch automatically returns to the Timekeeping Mode after a period of inactivity or by pressing a specific button. This ensures that the current time is always readily available.
Display Illumination: The backlight can be activated in any mode, providing temporary illumination of the display. The illumination automatically turns off after approximately two seconds to conserve battery life. It also turns off if an alarm starts to sound.
12/24-Hour Format Switching: The time display format can be switched between 12-hour (with AM/PM indicator) and 24-hour formats, offering flexibility based on user preference. This can be done while setting time digits.
Water Resistance: The watch is designed with varying levels of water resistance, indicated by markings on the back cover (e.g., WATER RESIST, 5BAR, 10BAR, 20BAR). It is important to adhere to specific usage precautions based on the water resistance level. For watches with water resistance, users should avoid operating buttons while submersed or wet, and refrain from wearing the watch in baths, heated swimming pools, saunas, or high-temperature/high-humidity environments. After submersion in seawater, the watch should be rinsed with plain water to remove salt and dirt. Regular replacement of gaskets (every two to three years) is recommended to maintain water resistance.
Band Care: Proper care of the watch band is crucial for comfort and longevity. Bands should not be fastened too tightly to prevent skin irritation and allow air circulation. Regular cleaning of the band is advised to prevent deterioration, rust, and breakage. If any abnormalities like loss of flexibility, cracks, discoloration, or loose pins are noticed, the band should be inspected or replaced by a service center. For metal bands or resin bands with metal parts, a soft toothbrush with a weak solution of water and mild detergent can be used for cleaning, followed by rinsing and drying. Leather bands should be cleaned with a soft cloth to remove water and sweat.
Temperature Precautions: The watch should not be exposed to extreme temperatures, such as leaving it on a car dashboard or near a heater, as this can cause malfunctions, time loss/gain, or LCD display issues. Rapid temperature changes can cause temporary fogging of the watch glass; persistent fogging or moisture inside the glass requires immediate professional inspection.
Impact Resistance: While designed for daily use and light activities, strong impacts should be avoided to prevent malfunctions.
Magnetism and Electrostatic Charge: Although digital watches are generally less affected by magnetism than analog watches, very strong magnetic fields (e.g., from medical equipment) should be avoided to prevent malfunctions or damage to electronic components. Similarly, exposure to very strong electrostatic charges can cause incorrect time display, blank displays, or damage to electronic components.
Chemicals: Contact with thinners, gasoline, solvents, oils, fats, cleaners, adhesives, paints, medicines, or cosmetics containing such ingredients should be avoided, as they can cause discoloration or damage to resin, leather, and other parts of the watch.
Storage: For long-term storage, the watch should be thoroughly cleaned of dirt, sweat, and moisture, and stored in a cool, dry place.
Resin Components Care: Resin parts can discolor if left wet or exposed to direct sunlight for long periods. Dirt accumulation can also cause discoloration. Friction can cause discoloration of painted components. To prevent color transfer, avoid prolonged contact with other items, especially when wet.
User Maintenance Routine: Regular cleaning with a soft cloth is recommended to keep the watch free of dirt, sweat, and other foreign matter. After exposure to seawater or mud, it should be rinsed with clean fresh water. For watches with crowns, buttons, or rotary bezels, periodic operation helps maintain proper function.
Battery Replacement: Battery replacement should be performed by an authorized service center using the specified battery type. It is also recommended to have the water resistance checked during battery replacement. The initial battery installed at the factory is for testing and may have a shorter life than the rated battery life; replacement of this battery may incur a charge. Low battery power is indicated by large timekeeping error, dim display, or a blank display, and replacement should be done promptly to prevent malfunctions.
General| Model | 3525 |
|---|---|
| Type | Digital |
| Movement | Quartz |
| Water Resistance | Yes |
| Alarm | Yes |
| Stopwatch | Yes |
