1. Introduction
This manual provides detailed instructions for the proper use and maintenance of your Casio Edifice EFA-131D-1A1VDF Analog-Digital Watch. Please read this manual carefully to ensure correct operation and to fully utilize all features of your timepiece.
The Casio Edifice EFA-131D-1A1VDF features a black dial, stainless steel case, and stainless steel band. It combines analog timekeeping with digital display functions, offering versatility and precision.
- Dial Color: Black
- Case Shape: Round
- Dial Glass Material: Mineral
- Band Color: Silver
- Band Material: Stainless Steel
- Watch Movement Type: Quartz
- Watch Display Type: Analog-Digital
- Case Material: Stainless Steel
- Case Diameter: 49 millimeters
- Clasp Type: Deployment Clasp
2. Setup and Initial Settings
Before using your watch, it is important to set the correct time and date.
2.1. Adjusting the Analog Time
- Pull the crown (B) out to the second click. This will stop the second hand.
- Rotate the crown to set the hour and minute hands to the desired time.
- Push the crown back in to the normal position.
2.2. Adjusting the Digital Time and Date
The digital display can be adjusted using the buttons on the side of the watch.
- Press the MODE button (C) repeatedly until the Timekeeping Mode is displayed.
- Hold down the ADJUST button (A) until the city code starts to flash in the digital display. This indicates the setting screen.
- Use the FORWARD button (D) and REVERSE button (E) to select the desired setting item (e.g., city code, DST, 12/24-hour format, hour, minute, year, month, day).
- Use the MODE button (C) to move between setting items.
- Once all settings are configured, press the ADJUST button (A) to exit the setting screen.
Image: Front view of the Casio Edifice EFA-131D-1A1VDF watch, highlighting the analog and digital displays, and the various control buttons for setting adjustments.
2.3. Band Adjustment
The stainless steel band can be adjusted for a comfortable fit. It is recommended to have this adjustment performed by a qualified jeweler or watch technician to prevent damage to the band or clasp.
3. Operating the Watch Functions
Your Casio Edifice watch offers several functions accessible via the MODE button (C).
3.1. Mode Navigation
Press the MODE button (C) to cycle through the different modes:
- Timekeeping Mode: Displays the current time and date.
- Stopwatch Mode: Measures elapsed time.
- Alarm Mode: Sets daily alarms.
- World Time Mode: Displays the current time in various cities around the world.
3.2. Stopwatch Function
- Navigate to the Stopwatch Mode using the MODE button (C).
- Press the START/STOP button (D) to start the stopwatch.
- Press the START/STOP button (D) again to stop the stopwatch.
- Press the RESET button (E) to reset the stopwatch to zero.
3.3. Alarm Function
- Navigate to the Alarm Mode using the MODE button (C).
- Hold down the ADJUST button (A) until the alarm time starts to flash.
- Use the FORWARD button (D) and REVERSE button (E) to set the desired alarm hour and minute.
- Press the ADJUST button (A) to confirm and exit the setting screen.
- Press the FORWARD button (D) in Alarm Mode to toggle the alarm ON/OFF.
3.4. Illumination (Light)
Press the LIGHT button (F) to illuminate the digital display for easy viewing in low-light conditions.
Image: Angled front view of the Casio Edifice EFA-131D-1A1VDF watch, illustrating the digital display and the positions of the control buttons for various functions.
4. Maintenance
Proper maintenance ensures the longevity and performance of your watch.
4.1. Water Resistance
This watch is water resistant up to 100 meters (10 BAR). This means it is suitable for swimming and snorkeling, but not for scuba diving. Do not operate the watch buttons or crown while the watch is wet or submerged in water.
4.2. Cleaning
Wipe the watch case and band with a soft, dry cloth to remove dirt and moisture. For stainless steel bands, a soft brush with mild soapy water can be used, followed by thorough rinsing and drying. Avoid using chemical cleaners or solvents.
4.3. Battery Replacement
The watch is powered by a quartz movement. When the battery runs low, the display may dim or the watch may stop functioning. Battery replacement should be performed by an authorized Casio service center or a qualified watch technician to ensure proper sealing and water resistance.
Image: Back view of the Casio Edifice EFA-131D-1A1VDF watch, displaying the stainless steel case back where water resistance information is typically engraved, and the deployment clasp.
5. Troubleshooting
If you encounter issues with your watch, refer to the following common problems and solutions:
-
Watch is not keeping accurate time (Analog or Digital):
Ensure the time settings are correct as described in Section 2. If the issue persists, the battery may be low and require replacement.
-
Digital display is blank or dim:
This typically indicates a low battery. Replace the battery at an authorized service center.
-
Buttons are unresponsive:
Check if the watch is wet. Do not operate buttons underwater. If the watch is dry and buttons are still unresponsive, there might be an internal malfunction requiring professional inspection.
-
Condensation inside the watch:
If condensation appears inside the watch glass and does not clear quickly, it may indicate a breach in water resistance. Seek immediate professional service to prevent further damage.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | EFA-131D-1A1VDF |
| Movement Type | Quartz |
| Display Type | Analog-Digital |
| Case Material | Stainless Steel |
| Case Diameter | 49 Millimeters |
| Case Thickness | 13 Millimeters |
| Band Material | Stainless Steel |
| Band Color | Silver |
| Dial Color | Black |
| Dial Glass Material | Mineral |
| Water Resistance Depth | 100 Meters (10 BAR) |
| Item Weight | 318 g |
| Product Dimensions | 1.5 x 1.5 x 1.5 cm |
Image: Close-up of the watch's case back, detailing engraved specifications such as water resistance and material composition.
7. Warranty and Support
7.1. Warranty Information
Your Casio Edifice EFA-131D-1A1VDF watch comes with a 2 Years Domestic Warranty from the manufacturer. This warranty covers manufacturing defects under normal use. Please retain your purchase receipt as proof of warranty.
7.2. Customer Support
For warranty claims, service, or further assistance, please contact Casio customer support or visit an authorized Casio service center. Contact details can typically be found on the official Casio website or your warranty card.







