Casio F-91W-1
Manual de usuario del reloj digital Casio serie F91W
Modelo: F-91W-1 | Marca: Casio
1. Introducción
The Casio F91W Series Digital Watch (Model F-91W-1) is a classic and reliable timepiece designed for everyday use. It features a digital display, LED light for illumination, a 1/100 second stopwatch, and a daily alarm. Its lightweight design and long battery life make it a practical choice for various activities. This manual provides detailed instructions on how to set up, operate, and maintain your watch.

Imagen: Frente view of the Casio F91W-1 Digital Watch, displaying the time, date, and various function indicators.
2. Configuración inicial
2.1 Configuración de la hora y la fecha
To set the time and date on your Casio F91W-1 watch, follow these steps:
- Presione el Modo button (bottom left) repeatedly until the seconds start flashing. This indicates you are in Time Setting Mode.
- Presione el Luz button (top left) to cycle through the settings: Seconds → Hour → Minutes → Month → Date → Day of Week.
- Utilice el Iniciar/Detener button (bottom right) to adjust the flashing value. For seconds, pressing this button will reset them to 00.
- Una vez que todos los ajustes sean correctos, presione el botón Modo button to exit the Time Setting Mode.
2.2 formato de 12/24 horas
Para cambiar entre los formatos de hora de 12 y 24 horas, presione el botón Iniciar/Detener button while in the regular timekeeping mode. The display will show 'PM' for afternoon hours in 12-hour format.
3. Funciones operativas
Luz LED de 3.1 pulgadas
Para iluminar la pantalla en condiciones de poca luz, presione el botón Luz button (top left). The light will remain on as long as the button is pressed.
3.2 Función de cronómetro
The watch includes a 1/100 second stopwatch.
- Presione el Modo button until you reach the Stopwatch Mode (indicated by 'ST' or 'STOP' on the display).
- Presione el Iniciar/Detener Botón para iniciar el cronómetro.
- Presione el Iniciar/Detener Presione nuevamente el botón para detener el cronómetro.
- Para poner a cero el cronómetro, pulse el botón Luz botón mientras el cronómetro está detenido.
3.3 Alarma diaria
Set a daily alarm to sound at a specific time.
- Presione el Modo button until you reach the Alarm Mode (indicated by 'AL' or 'ALARM' on the display).
- Presione el Luz button to select the hour or minutes to set.
- Utilice el Iniciar/Detener Botón para ajustar el valor de parpadeo.
- Para encender o apagar la alarma, presione el botón Iniciar/Detener button while in Alarm Mode (without any value flashing). An alarm indicator will appear on the display when the alarm is active.
- To exit Alarm Mode, press the Modo botón.
4. Cuidado y mantenimiento
4.1 Limpieza
Limpie el reloj con un paño suave y seco para eliminar la suciedad y la humedad. Para la suciedad persistente, utilice un paño suave.ampened with water and a mild neutral detergent, then wipe dry. Avoid using volatile agents like thinner or benzine, as they may damage the resin components.
4.2 Resistencia al agua
The Casio F91W-1 is Resistente al agua. This means it is suitable for everyday use and can withstand splashes or brief immersion in water. Do not submerge the watch in water, and it is not meant for showering, bathing, or swimming. Water resistance ratings can degrade over time, so avoid operating buttons while the watch is wet.
4.3 Duración de la batería
The approximate battery life for the Casio F91W-1 is 7 years on a CR2016 lithium metal battery. When the display becomes dim or the light function weakens, it is an indication that the battery needs replacement. Battery replacement should ideally be performed by a qualified technician to ensure water resistance is maintained.

Image: The white Casio watch box, indicating original packaging.
5. Solución de problemas
| Problema | Posible causa / solución |
|---|---|
| La pantalla está en blanco o tenue. | Battery may be low or depleted. Replace the battery (CR2016). |
| Los botones no responden. | The watch might be in a frozen state. Try removing and reinserting the battery (AC reset). If issues persist, consult a service center. |
| La alarma no suena. | Ensure the alarm function is activated (alarm indicator visible on display). Check battery level. |
| Hora/fecha incorrecta. | Re-enter Time Setting Mode and adjust the time and date as per Section 2.1. |
| Agua dentro del reloj. | Esto indica una falla en la resistencia al agua. Deje de usar el reloj inmediatamente y llévelo a un centro de servicio técnico calificado para su inspección y reparación. |
For more detailed troubleshooting or issues not listed here, please refer to the official Casio F91W User Guide PDF or contact Casio customer support.
6. Especificaciones del producto
| Característica | Detalle |
|---|---|
| Número de modelo | F-91W-1X |
| Dimensiones | 3.54 x 13.39 x 15.35 pulgadas; 1.9 onzas |
| Material | Resina |
| Tipo de batería | 1 Lithium Metal (CR2016, included) |
| Duración aproximada de la batería | 7 años |
| Resistencia al agua | Water Resistant (not for showering/bathing or swimming) |
| Funciones | LED light, 1/100 SEC Stopwatch, Daily Alarm, Auto-calendar, 12/24 Hour Format, Regular Time Keeping (HR, Min, SEC, PM, Date, Day) |
| Fabricante | Casio |
| País natal | Tailandia |
| Fecha de primera disponibilidad | 12 de noviembre de 2003 |
7. Garantía y soporte
7.1 Información de garantía
Casio products typically come with a manufacturer's warranty covering defects in materials and workmanship. Please refer to the warranty card included with your purchase or visit the official Casio webSitio para conocer los términos y condiciones de garantía específicos aplicables a su región.
7.2 Atención al cliente
For further assistance, technical support, or service inquiries, please utilize the following resources:
- Guía oficial del usuario (PDF): For detailed instructions and diagrams, you can download the official user guide: Descargar la Guía del usuario en PDF
- Casio Oficial Websitio: Visit the official Casio website for product information, FAQs, and contact details for customer service in your region.
- Centros de servicio autorizados: For repairs or battery replacement, it is recommended to use authorized Casio service centers to ensure genuine parts and proper handling.
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