1. Introducció
Thank you for choosing the Casio Edifice Analog-Digital Watch, Model EFA-121D-1AVDR (ED263). This timepiece combines classic analog display with advanced digital functionalities, offering a rich and luxurious appeal with a sporty touch. It is designed for durability and precision, featuring a robust stainless steel construction and a mineral glass for enhanced scratch resistance. This manual provides detailed instructions to help you understand and utilize all the features of your new watch.

Figura 1.1: Frontal view of the Casio Edifice Analog-Digital Watch, showcasing its black dial, analog hands, and digital display.
2. Configuració
2.1 Configuració inicial de la data i l'hora
Upon first use or after a battery change, you may need to set the current time and date. Refer to the specific button functions for time adjustment. The watch features both analog and digital displays, which may need to be synchronized.
2.2 Ajust de la corretja del rellotge
The stainless steel band features a one-press and three-fold clasp for a secure and comfortable fit. To adjust the length, links may need to be added or removed. It is recommended to have this adjustment performed by a qualified jeweler or watch technician to prevent damage to the band or clasp mechanism.

Figura 2.1: posterior view of the watch, showing the stainless steel back case and the open three-fold clasp mechanism for band adjustment.
3. Instruccions de funcionament
Your Casio Edifice watch is equipped with several functions accessible via the side buttons. Familiarize yourself with the button layout and their respective operations.

Figura 3.1: lateral view of the watch, highlighting the control buttons used for accessing various modes and settings.
3.1 Mode de mesura del temps
This is the default mode, displaying the current time and date. The analog hands show the hour and minute, while the digital display provides additional information such as seconds, day, and date.
3.2 Thermometer Function
The watch features a built-in thermometer that provides temperature readings approximately every two minutes. To access this function, press the designated mode button until the temperature display appears on the digital screen. Ensure the watch is off your wrist for accurate readings, as body heat can affect the sensor.
3.3 Hora mundial
The world time function allows you to view the current time in 50 different cities around the globe. Navigate to the world time mode using the mode button, then use the adjustment buttons to scroll through the city codes. This is useful for frequent travelers or those communicating across different time zones.
3.4 Cronòmetre
The watch includes a chronograph stopwatch, ideal for timing events. It features a dual stopwatch capability, allowing simultaneous timing of two competitors. To use the stopwatch:
- Enter stopwatch mode.
- Press the start/stop button to begin and end timing.
- Use the split/reset button for lap times or to reset the stopwatch.
3.5 Temporitzador de compte enrere
Set a specific time for the countdown timer, and the watch will alert you when the time expires. This feature is useful for various activities requiring precise timing.
3.6 Funció d'alarma
The watch is equipped with an alarm function. You can set a daily alarm to sound at a specific time. Refer to the detailed instructions in the full manual for setting and deactivating the alarm.
4. Manteniment
4.1 Neteja del rellotge
To maintain the appearance of your watch, wipe it regularly with a soft, dry cloth. For stainless steel parts, a slightly damp cloth can be used, followed by a dry one. Avoid using chemical cleaners or abrasive materials.
4.2 Substitució de la bateria
The watch operates on a battery-powered quartz movement with an approximate battery life of three years. When the battery runs low, the display may dim or functions may become erratic. Battery replacement should be performed by an authorized Casio service center to ensure proper sealing and water resistance.
4.3 Resistència a l'aigua
This watch is water resistant to a depth of 100 meters (10 ATM). This means it is suitable for everyday use and can withstand splashes, rain, and even swimming. However, it is not suitable for diving. Do not operate the buttons while the watch is wet or submerged, as this can compromise the water resistance. After exposure to saltwater, rinse the watch with fresh water and dry it thoroughly.
5. Solució De Problemes
Si teniu problemes amb el rellotge, consulteu els següents problemes i solucions habituals:
- La pantalla digital està en blanc o té poca llum: This usually indicates a low battery. Arrange for battery replacement at an authorized service center.
- Analog Hands Not Synchronized with Digital Time: The analog hands may need manual adjustment or synchronization. Refer to the full manual for specific steps on aligning the analog time.
- Functions Not Responding: Ensure the watch is not in a locked mode. If the issue persists, a full reset may be required (consult the detailed manual), or the battery may be depleted.
- Lectures de temperatura inexactes: Ensure the watch has been off your wrist for at least 20-30 minutes to allow the sensor to acclimate to ambient temperature.
For problems not listed here, please contact Casio customer support or an authorized service center.
6. Especificacions
| Característica | Especificació |
|---|---|
| Marca | Casio |
| Número de model | EFA-121D-1AVDR (ED263) |
| Tipus de visualització | Analog-Digital (Chronograph) |
| Tipus de moviment | Quars |
| Material de la caixa | Acer inoxidable |
| Diàmetre de la caixa | 45 mil·límetres |
| Color del dial | Negre |
| Material del vidre de l'esfera | Mineral |
| Material de la banda | Acer inoxidable |
| Color de banda | Plata |
| Profunditat de resistència a l'aigua | 100 metres (10 ATM) |
| Pes de l'article | 153 grams |
| Característiques especials | Thermometer, World Time, Stopwatch, Countdown Timer |
7. Garantia i Suport
7.1 Informació de la garantia
Your Casio Edifice watch comes with a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration. The warranty typically covers manufacturing defects but does not cover damage resulting from misuse, accidents, or unauthorized repairs.
7.2 Atenció al client
For technical assistance, service, or inquiries regarding your watch, please contact Casio customer support. You can find contact information on the official Casio website or in the documentation provided with your watch. When contacting support, please have your watch model number (EFA-121D-1AVDR) and purchase details ready.





