Casio WVA-510 Module 2760 2761 User Manual
This manual provides detailed instructions for operating your Casio WVA-510 watch with module 2760 2761.
Important Information
Before proceeding, please read this important information.
Battery
- If the display becomes dim or the backlight does not function, the battery needs replacement. Contact an authorized Casio dealer or distributor. The battery included with your watch is for testing purposes and may have a shorter life than a standard battery.
Water Resistance
Watches are classified by water resistance rating (from I to V). Refer to the table below to understand the usage rules for your watch's rating.
| Marking on Case | Splashes, Rain, Washing Machines, etc. | Swimming, Washing | Diving, Snorkeling | Scuba Diving |
|---|---|---|---|---|
| I | No | No | No | No |
| II | Yes | No | No | No |
| III | Yes | Yes | No | No |
| IV | Yes | Yes | Yes | No |
| V | Yes | Yes | Yes | Yes |
Notes for respective categories:
- The watch is not water-resistant. Avoid any moisture.
- If the watch is exposed to salt water, rinse it thoroughly with fresh water and dry it.
- If the watch is exposed to salt water, rinse it thoroughly with fresh water and dry it.
- The watch can be used for scuba diving (except for depths requiring a helium-oxygen mixture).
ATTENTION!!!
For all types of watches, do not:
- Press buttons underwater
- Set the time underwater
- Unscrew the crown underwater
Important Notes
- Some water-resistant watches feature leather straps. Do not wear these watches while swimming or engaging in any activity where the strap may be submerged in water.
Watch Care
- The rubber gasket that protects the watch from water and dust should be replaced every 2-3 years.
- If water enters the watch, have it inspected immediately by an authorized Casio dealer or distributor.
- Avoid exposing the watch to extreme temperatures (very high or very low).
- While designed for normal use, avoid rough handling and dropping the watch.
- Do not fasten the watch strap too tightly. A finger should fit between your wrist and the strap.
- To clean the watch and strap, use a dry soft cloth or a soft cloth dampened with a mild neutral detergent solution. Never use volatile solvents such as gasoline, thinners, or spray cleaners.
- When not in use, store the watch in a dry place.
- Avoid contact with gasoline, cleaning solvents, aerosol sprays, adhesives, paint, etc. Chemical reactions with these materials can damage gaskets, the case, and the finish.
- Some models have silk-screened designs on the strap. Be careful when cleaning these straps to avoid damaging the designs.
For Watches with Polymer Straps...
- A white, powdery substance may appear on the strap. This substance is harmless and can be easily removed by wiping with a soft cloth.
- Sweat or moisture on a polymer strap, or storing it in high humidity, can lead to damage, tearing, or cracking. To ensure a long life for the polymer strap, wipe it clean of dirt and water with a soft cloth as often as 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 the watch surface gets wet, wipe it dry as soon as possible.
- Prolonged contact with a wet surface can lead to discoloration of the fluorescent color. Keep the fluorescent surface dry and avoid contact with other surfaces.
- Heavy friction on a surface with fluorescent paint may transfer the paint to the other surface.
Casio Computer Co., Ltd. is not responsible for any damage or claims from third parties arising from the use of this watch.
Overview of Operating Modes
The illustration below shows the watch in the Current Time Mode.
Pressing the "C" button sequentially cycles through the modes in the following order: Current Time Mode → Stopwatch Mode → Split Time Stopwatch Mode → Dual Time Mode → Alarm Mode → Analog Time Mode → Current Time Mode.
Press the "D" button in any mode to turn on the backlight.
Calibration
This watch automatically corrects the time based on a calibration signal. You can also set the time manually.
- In Current Time Mode, press the "B" button to display the time of the last calibration signal reception.
- Before using the watch, set your home city.
Setting Home City
- In Current Time Mode, press and hold the "A" button until the signal transmission indicator appears, indicating the start of settings. The second hand will move to the 12 o'clock position.
- Press the "C" button to set the city code.
- Use the "B" and "D" buttons to change the city code for your home location.
- After completing the settings, press the "A" button twice.
Calibration Signal
This watch receives a calibration signal to update the time. Signal transmission centers are located in Germany (approx. 25 km from Frankfurt) and Rugby, England. The signal covers a radius of 1000 km. The signal may be weak at distances over 500 meters. Signal reception can be affected by weather conditions, atmospheric pressure, and temperature. Factors that can weaken the signal include:
- Being near a TV, computer, or home appliance.
- Being in a subway or tunnel.
- Being at an airport, train station, or busy highway.
- Proximity to radio stations or signal transmission towers.
- Electrostatic charge.
There are two types of calibration signal reception:
Auto-Calibration: When enabled, the watch automatically receives the signal five times daily and corrects the time. When enabled, the watch automatically receives the signal five times daily and corrects the time. When enabled, the watch automatically receives the signal five times daily and corrects the time.
Forced Calibration: You can manually initiate signal reception by pressing a button.
- Position your watch horizontally.
- In Current Time Mode, press and hold the "B" button for 2 seconds until a signal sounds, indicating the start of reception. The second hand moves to the 12 o'clock position.
- Signal reception takes between 2 and 7 minutes. Do not move the watch during this period.
- After reception, the watch will display the data from the last signal reception.
To stop the reception process and return to Current Time Mode, press the "B" button.
- If signal reception fails, the watch will display "- - - -" for 1-2 minutes before automatically returning to Current Time Mode.
- You can return to Current Time Mode by pressing the "B" button.
Auto-Calibration Signal
When auto-calibration is enabled, the watch automatically receives the signal five times a day at 0:00, 1:00, 2:00, 3:00, and 4:00 AM. An additional reception is attempted at 5:00 AM if none of the previous attempts were successful. Auto-calibration only occurs when the watch is in Current Time Mode or Dual Time Mode. Signal reception lasts from 2 to 7 minutes; avoid moving the watch during this time.
Signal Reception Indicator
This indicator shows the strength of the received signal. A full indicator means the signal is received well. Try to position your watch for optimal reception. It takes about 10 seconds for the indicator to show the signal strength. If the calibration indicator is not displayed, calibration is not occurring. You may need to perform manual calibration or check your watch settings.
Selecting Signal Transmission Center
Signal transmission centers are located in Germany (approx. 25 km from Frankfurt) and Rugby, England.
- In Current Time Mode, press the "B" button to display the time of the last calibration signal reception.
- Press and hold the "A" button until the signal transmission indicator (AT, M, D) appears, indicating the start of settings.
- Use the "D" and "B" buttons to select the transmission signal: "A" (Auto), "M" (England, for module 2761), or "DCF" (Germany, for module 2760).
- Press the "A" button to complete the settings.
Stopwatch Mode
The stopwatch mode allows you to measure elapsed time, split times, and dual finish times. The maximum measurement range is 59 minutes and 59.99 seconds.
Measuring Lap Times
Press "B" (Start) → "B" (Stop) → "B" (Restart) → "B" (Stop) → "A" (Reset).
Measuring Split Times
Before starting, press "A" to display "LAP". Press "B" (Start) → "A" (Split Time displayed for 5 seconds, then lap number) → ... → "B" (Stop) → "A" (Reset).
Measuring Distance Times
Before starting, press "A" to display "SPL". Press "B" (Start) → "A" (Split time for the next segment continues to be measured) → ... → "B" (Stop) → "A" (Reset).
Dual Finish
Before starting, press "A" to display "SPL". Press "B" (Start) → "A" (First Finish) → "B" (Second Finish - the time of the second finish appears at the bottom of the display) → "A" (Reset).
For the first minute of measurement, the time is displayed in 1/20 second increments.
Stopwatch Memory
In this mode, you can view or delete measurement data saved in Stopwatch Mode. Data is automatically sorted into entries, each with a number. Upon entering Stopwatch Memory, the display shows the number of saved entries. The memory can store up to 50 entries. If the memory is full, older data is automatically deleted to make space for new entries.
Viewing Saved Data
- In Stopwatch Memory Mode, press the "A" button to select the display format: "LAP" (split time) or "SPLIT" (distance time).
- Press the "B" button to scroll through the saved time entries.
Deleting All Stopwatch Memory Data
In Stopwatch Memory Mode, press and hold the "A" and "B" buttons simultaneously for 2 seconds. The display will show a flashing "- -: - -. - - ". Continue holding the buttons until the flashing stops.
This will delete all data in the stopwatch memory. After deletion, the display will show "LAP - -".
Dual Time Mode
This mode allows you to view the local time in any of 29 cities worldwide (29 time zones).
Viewing Time in Another Time Zone
- In World Time Mode, press the "B" button to select the city for which you want to view the time.
- When you release the "B" button, the display shows the GMT difference between the current time and the selected city's time.
- To enable/disable Daylight Saving Time (DST) for another city, select the city name and press and hold the "A" button. The "DST" indicator will appear on the display when DST is active.
Alarm Mode
You can set various daily alarms. The alarm will sound for 10 seconds at the set time.
- If the hourly chime is enabled, a short beep will sound at the top of each hour.
- If the snooze alarm is enabled, the alarm will sound 7 times every five minutes until turned off.
- If the countdown alarm is enabled, the watch display will show the remaining time until the alarm sounds.
Setting Alarms
- In Alarm Mode, press the "B" button to select the alarm type: AL1 → AL2 → AL3 → AL4 (Countdown Alarm) → AL5 (Snooze Alarm) → :00 (Hourly Chime).
- After selecting the alarm type, press and hold the "A" button. The hour digits will flash, indicating they are selected for setting. The alarm will automatically be turned on at this point.
- Press the "C" button to cycle through the setting digits: Hours → Minutes → Hours.
- Press the "D" button to increase the value and the "B" button to decrease it. Holding a button down allows for faster adjustment.
The format (12-hour or 24-hour) matches the setting for the current time. When using the 12-hour format, be mindful of setting AM or PM correctly.
- After completing the settings, press the "A" button to return to Alarm Mode.
Checking Alarm Sound
In Alarm Mode, press the "B" button to test the alarm sound.
Turning Alarms On/Off
- In Alarm Mode, press the "B" button to select the alarm type.
- After selecting the alarm type, press the "A" button to turn the selected alarm on or off.
The "AL" indicator appears on the display for any of the 4 regular alarms. The "SNZ" indicator appears for the snooze alarm.
Current Time Mode
Setting Time and Date
- In Current Time Mode, press and hold the "A" button until the GMT time difference appears. The second hand moves to the 12 o'clock position.
- Press the "B" and "D" buttons to select the time zone you want to set as your primary.
- Press the "C" button to cycle through the settings: GMT time difference → Daylight Saving Time (DST) → 12/24 hour format → Seconds → Hours → Minutes → Year → Month → Day → Power Saving Mode.
- If you select seconds (flashing seconds digits), press "D" to reset the seconds to 00. If you press "D" when the seconds are between 30 and 59, the seconds will reset to 00 and the minutes will increment by 1. If seconds are between 00 and 29, minutes will not change.
- Use the "B" and "D" buttons to change minutes, hours, etc.
- Press "D" to switch between 12-hour and 24-hour formats. In the 12-hour format, "P" indicates PM.
- Press "D" to turn Daylight Saving Time (DST) on or off. Each press cycles through: Auto DST ("A") → DST Off ("OFF") → DST On ("ON") → Auto DST ("A").
- Press "D" to turn the Power Saving Mode on ("ON") or off ("OFF").
Holding a button down allows for faster adjustment.
The day of the week is automatically set according to the date.
- After setting the date and time, press the "A" button.
Backlight
Press the "D" button in any mode to turn on the backlight. The backlight uses an LED combined with a fluorescent coating to make the time readable in the dark. The watch may emit an audible signal when the backlight is on, due to vibrating components; this is not a malfunction. The backlight may be difficult to see in direct sunlight. Frequent use of the backlight reduces battery life.
Display Illumination Duration Setting
- In Current Time Mode, press and hold the "A" button until the time difference display flashes.
- Press the "C" button three times to enter the setting mode.
- Press the "B" button to select the illumination duration: 2 seconds or 1.5 seconds.
- Press the "A" button to finish.
Auto-Backlight
You can turn the auto-backlight function on or off by holding the "D" button for 2 seconds in Current Time Mode. The auto-backlight activates automatically when your hand is tilted at an angle of approximately 40° from the ground. Do not use auto-backlight when it could impair your vision or distract you, such as while riding a motorcycle or bicycle.
Analog Time Mode
The analog time is synchronized with the current time, so manual setting is usually not required. However, if the analog time does not match the current time for any reason, follow these steps:
- In Analog Time Mode, press and hold the "A" button until "- 00 -" appears. The second hand will move to the 12 o'clock position. If it does not, use the "D" button to adjust its position. Each press of "D" advances the hand by 1 second.
- Use the "D" and "B" buttons to set the current time. Each press of "D" advances the time by 20 seconds. Holding "D" or "B" allows for faster adjustment.
- Press the "A" button to finish.
Power Supply
This watch is powered by a solar cell and a rechargeable battery. If the watch is kept in the dark for extended periods, the battery charge will decrease.
Power Level Indicator
The indicator at the top of the display shows the battery charge level:
| Level | Indicator | Function |
|---|---|---|
| 1 | HI | Sufficient battery charge for normal operation. |
| 2 | MID | Sufficient battery charge for normal operation. |
| 3 | LOW C | Alarm, backlight, electronic display, and calibration signal may not function. |
| 4 | LOW | Power supply is completely discharged. |
If the indicator is not displayed, the battery is fully discharged. Place the watch in a light source. Avoid prolonged exposure to direct sunlight, as this may cause malfunctions. If you frequently use the backlight or alarm, the "R" indicator may appear, signifying that the battery is charging.
Charging the Power Supply
After a full charge, the watch will operate normally for approximately 5 months under the following conditions: the watch is not exposed to direct sunlight, 5 calibration signals per day, 1.5 seconds of backlight use per day, 10 seconds of alarm use per day, 18 hours of operation with 6 hours of sleep mode daily. Daily exposure to light ensures continuous battery charging.
| Light Intensity | Approximate Charging Time |
|---|---|
| Direct sunlight (50,000 lux) | 5 minutes |
| Sunlight through window (10,000 lux) | 24 minutes |
| Daylight in cloudy weather (5,000 lux) | 48 minutes |
| Daylight lamp (500 lux) | 8 hours |
The table below shows the time required to charge the power supply.
| Light Intensity | Level 4 | Level 3 | Level 2 | Level 1 |
|---|---|---|---|---|
| Direct sunlight | 1 hour | 14 hours | 4 hours | - |
| Sunlight through window | 3 hours | 71 hours | 20 hours | - |
| Daylight in cloudy weather | 5 hours | - - - | - - - | - - - |
| Daylight lamp | 49 hours | - - - | - - - | - - - |
Power Saving Mode
Sleep mode conserves battery power when the watch is in darkness. The table below shows the availability of watch functions when in sleep mode.
| Duration in Sleep Mode | Functions |
|---|---|
| 3 - 4 days |
|
| 8 days or more |
|
Turning Power Saving Mode On/Off
- In Current Time Mode, press and hold the "A" button until the signal reception indicator flashes.
- Press the "A" button again.
- Press the "C" button nine times to access the Power Saving Mode settings.
- Press the "D" button to turn Power Saving Mode on ("ON") or off ("OFF").
- Press the "A" button to finish.
When the mode is on, the "PS" indicator appears on the display. The watch may automatically enter sleep mode. To wake the watch, place it in a light source or press any button. If the watch remains in sleep mode for three to four days, the display will turn off, but alarms, auto-calibration, and analog time will remain functional. If it remains in sleep mode for eight days or more, the display, alarms, auto-calibration, and analog time (frozen at 12 o'clock) will all cease to function.
Display Hand Adjustment
You can adjust the position of the 1/20-second stopwatch hand and the power level indicator hand if they are not at the 12 o'clock position when entering Stopwatch Mode.
- Enter Analog Time Mode.
- Press and hold the "A" button until "- 0 0 -" appears.
- Press the "A" button to enter the hand setting display. The display will show "00:00:00", indicating the start of setting the 1/20-second stopwatch hand. The rightmost digits should flash.
- Press the "D" button to move the hand to the 12 o'clock position.
- Press the "C" button to finish. The leftmost digits will flash, indicating the start of setting the power level indicator hand.
- Press the "D" button to move the hand to the 12 o'clock position.
- Press the "A" button twice to finish.
Technical Specifications
Accuracy: ±15 seconds per month at normal temperature.
Summary of Modes and Features
- Current Time Mode: Displays hours, minutes, seconds, AM/PM, year, month, day, and day of the week. Features an automatic calendar from 2000 to 2099 and 12/24 hour format with DST.
- Calendar System: Automatic calendar from 2000 to 2099.
- Other: 12/24 hour format, DST (Daylight Saving Time).
- Calibration Signal: Receives signals at 0:00, 1:00, 2:00, 3:00, and 4:00 AM daily, with manual calibration available.
- Dual Time Mode: Displays current time in 29 cities (29 time zones) with DST support.
- Analog Time Mode: Displays analog time synchronized with current time.
- Alarm Mode: Features 3 daily alarms, snooze alarm, countdown alarm, and hourly chime.
- Stopwatch Mode: Measures elapsed time, split times, and dual finish times up to 59 minutes and 59.99 seconds. Includes 1/20 second measurement for the first minute.
- Stopwatch Measurement Modes: Lap times, split times, distance times, dual finish.
- Stopwatch Memory: Stores up to 50 measurement entries.
- Other: Backlight (LED), power level indicator, power saving mode.
Product Information
| Item | Details |
|---|---|
| Name | Electronic / Electro-mechanical Quartz Wristwatches (Men's/Women's) |
| Brand | CASIO |
| Manufacturer | CASIO COMPUTER Co.,Ltd. |
| 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 |
| Authorized Service Organization Address for Claims | Specified in the warranty card |
Product complies with GOST 26270-98 (clause 4.35).
Certificate of Conformity No. РОСС ЈР. АЯ46.Д42228 / РОСС ЈР. АЯ46.Д42071 / РОСС ЈР. АЯ46.Д42230
