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The Casio G-Shock GWM500A-1 is a robust digital sport watch designed for durability and precision. It features Multi-Band 6 Atomic Timekeeping for accurate time synchronization, Tough Solar Power for self-charging, and 20BAR water resistance, making it suitable for various demanding environments. This manual provides detailed instructions for setting up, operating, and maintaining your watch.

Figura 1: Frontal view of the Casio G-Shock GWM500A-1 watch, showcasing its digital display and prominent buttons.
Configuració
Upon first use or after prolonged storage in darkness, your watch may require initial charging and time synchronization.
Càrrega inicial
The GWM500A-1 features Tough Solar Power. Expose the watch face to light to charge the internal battery. Direct sunlight is most efficient, but indoor lighting will also charge it, albeit slower. Ensure the watch is exposed to light regularly to maintain a high charge level.
Atomic Time Synchronization (Multi-Band 6)
This watch automatically receives time calibration signals from six transmission stations worldwide (Japan, North America, UK, Germany, China) to maintain accurate time. The watch attempts to synchronize daily, typically overnight.
- Automatic Receive: The watch will attempt to receive the calibration signal automatically every night, usually around midnight. For best reception, place the watch near a window, away from metal objects and electronic devices.
- Recepció manual: To manually initiate time synchronization, press and hold the "Forward" button (or "Receive" on older models) until "RC" appears on the display. The watch will then attempt to receive the signal. A successful reception is indicated by a small satellite dish symbol on the display.
Vídeo 1: Un breu resumview of the Casio G-Shock GWM500A-1 Digital Wrist Watch, highlighting its design and digital display.
Instruccions de funcionament
Funcions del botó
The watch features four main buttons:
- ADJUST (Top Left): S'utilitza per entrar i sortir dels modes de configuració i per confirmar la configuració.
- MODE (Part inferior esquerra): Cycles through different modes (Timekeeping, World Time, Alarm, Stopwatch, Countdown Timer).
- REVERSE (Top Right): S'utilitza per disminuir valors o retrocedir per la configuració.
- FORWARD (Bottom Right): Used to increase values or move forward through settings. Also initiates manual time synchronization.
Mode de cronometratge
This is the default mode, displaying the current time, date, and day of the week. The watch automatically adjusts for Daylight Saving Time (DST) and leap years once synchronized with the atomic signal.
Mode d’hora mundial
Et permet view the current time in 48 cities (31 time zones) around the world. Use the "Reverse" and "Forward" buttons to scroll through city codes.
Mode d'alarma
The watch supports 4 daily alarms and one snooze alarm. You can set specific times for each alarm. Use "Adjust" to select an alarm, and "Reverse" or "Forward" to set the time. Press "Adjust" again to confirm.
Mode de cronòmetre
The stopwatch measures elapsed time, split times, and two finishes. It has a 1/100th second accuracy and a 24-hour capacity. Press "Forward" to start/stop and "Reverse" to reset.
Mode de temporitzador de compte enrere
Set a countdown time up to 24 hours. An alarm sounds when the countdown reaches zero. Use "Adjust" to set the countdown time, and "Forward" to start/stop the timer.
Backlight (Full Auto EL)
The watch features an Electro-Luminescent backlight for illumination in low light conditions. The Full Auto EL function automatically illuminates the display when the watch is tilted towards your face in dim light. This feature can be enabled or disabled in the settings.
Manteniment
Neteja
Netegeu el rellotge regularment amb un drap suau i sec.amp cloth to remove dirt and grime. For resin bands, a mild soap solution can be used. Avoid harsh chemicals or abrasive cleaners. While the watch is water-resistant, avoid pressing buttons underwater or exposing it to hot water/steam (e.g., during showering) as this can degrade seals over time.
Substitució de banda
The resin band is durable but may show wear over time, especially with heavy use. The band is attached with screws, making replacement straightforward. If replacement is needed, ensure you use genuine Casio parts to maintain the watch's integrity and water resistance.

Figure 2: The Casio G-Shock GWM500A-1 watch presented in its original black G-Shock packaging.
Resolució de problemes
- La pantalla està en blanc o té poca llum: The watch battery may be low. Expose the watch face to bright light for several hours to charge it.
- L'hora és incorrecta: Ensure the watch is receiving the atomic time calibration signal. Try manual synchronization (see Setup section). Check if the watch is in an area with poor signal reception (e.g., indoors, near large metal structures).
- L'alarma és massa silenciosa: The alarm volume is fixed and cannot be adjusted. Consider placing the watch closer to you or using an additional alarm if you are a heavy sleeper.
- Buttons are stiff or unresponsive: Ensure no dirt or debris is lodged around the buttons. Clean the watch as described in the Maintenance section. Avoid pressing buttons forcefully.
Especificacions
| Característica | Detall |
|---|---|
| Número de model | GWM500A-1 |
| Dimensions | 2.23 x 1.81 x 0.65 polzades |
| Pes | 0.35 unces |
| Resistència a l'aigua | 20 BAR (200 metres) |
| Font d'alimentació | Tough Solar (energia solar) |
| Cronometratge | Cronometratge atòmic multibanda 6 |
| Hora del món | 48 cities + UTC |
| Alarmes | 4 Daily Alarms + 1 Snooze |
| Cronòmetre | 1/100th sec, 24-hour capacity |
| Temporitzador de compte enrere | Fins a 24 hores |
| Fabricant | Casio |
| País d'origen | Xina |
Garantia i Suport
Your Casio G-Shock watch comes with an International Warranty Card. Please refer to this card for specific warranty terms and conditions.
For further assistance or to download the full user manual in PDF format, please visit the official Casio support website or refer to the document link provided with your purchase.
Manual d'usuari oficial (PDF): Descarrega aquí
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