Casio G-Shock G-7900-1D - Black
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JoomCasio Men's Black G-Shock G-7900-1D G7900-1D Digital Sports Watch
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Product Information
Full details
The Casio G-Shock G-7900-1D is a rugged digital sports watch designed for those who demand durability and functionality in extreme environments. Its primary benefit is its exceptional resilience, thanks to its shock-resistant resin construction and 200M water resistance, making it ideal for adventurers and athletes. A minor caveat is its 50mm case size, which may be substantial for individuals with smaller wrists. Key features include a digital display, quartz movement, world time, multiple alarms, a countdown timer, and an auto EL backlight for clear visibility.
All features
| Colour | Black |
|---|---|
| Series | G-Shock |
| Model Part Number | G-7900-1DR-F |
| Brand | CASIO |
Extended Product Information
FAQs
How do I set the world time on the G-7900-1D?
Press the `MODE` button until you see 'WT' on the display. Then, use the `UP` and `DOWN` buttons on the right side to cycle through the available cities/time zones and select your desired one.
Is the G-Shock G-7900-1D suitable for diving?
With 200M water resistance, this watch is suitable for recreational diving and professional marine activities. However, always ensure the crown is screwed down (if applicable) and buttons are not operated underwater.
How long does the battery typically last?
Casio G-Shock watches are known for their long battery life, often lasting several years (typically 2-3 years or more for this model under normal use). The specific module (3194) usually indicates a battery life of around 2 years.
Can I change the watch band?
Yes, the resin band can typically be replaced. You would need to purchase a compatible G-Shock replacement band and have it installed, potentially by a watch repair professional to ensure proper fit and water resistance.
What does 'Auto EL Backlight with Afterglow' mean?
The 'Auto EL Backlight' means the backlight activates automatically when you tilt the watch towards your face. 'Afterglow' means the light stays on for a few seconds after you've stopped tilting the watch, allowing you to read the time.
How do I turn the button operation tone on or off?
To toggle the button operation tone on/off, press and hold the `MUTE` button (usually bottom right) for a few seconds while in any mode. You will see 'MUTE' appear on the display when the tone is off.
Troubleshooting
Watch is not keeping accurate time.
Ensure the time is set correctly. If the issue persists, the battery may be low or the quartz movement may require servicing.
Backlight not working.
Check if the auto EL backlight is enabled. If it is, and still not functioning, the battery may be depleted or there might be an internal issue requiring professional inspection.
Buttons are unresponsive.
Ensure the watch is not submerged in water when pressing buttons. Try cleaning around the buttons. If they remain unresponsive, seek professional service.
Alarm sounds are not audible.
Verify that the alarm is correctly set and not muted. Check the button operation tone setting if applicable, though alarms are usually independent.
Pros and Cons
Pros
- Exceptional durability and shock resistance for harsh conditions.
- High water resistance makes it suitable for water sports and diving.
- Clear, backlit display for easy reading in the dark.
- Versatile world time function for global travelers.
- Long battery life typical of G-Shock models.
Cons
- Large case size may not suit all wrist sizes.
- Digital-only display offers limited customization of watch faces.
- Button operation tone can be turned on/off, but is not a critical con.
- Resin band, while durable, may require replacement over extended use.
Setup, Compatibility & Care
Setup:
- Setting Time/Date: Press the `ADJUST` button (top left) to enter setting mode. Use the `MODE` button (bottom left) to cycle through hours, minutes, seconds, year, month, and day. Use the `UP` and `DOWN` buttons (right side) to adjust values. Press `ADJUST` to confirm and exit.
- World Time: Press the `MODE` button until the `WT` indicator appears. Use the `UP` and `DOWN` buttons to select your desired city or time zone.
- Alarms/Timers: Cycle through modes using the `MODE` button until you reach the alarm or timer screen. Follow on-screen prompts and use the `UP`/`DOWN` buttons to set values.
Compatibility:
This is a standalone digital watch and does not require compatibility with other devices for its core functions. Its module number is 3194.
Care:
- Cleaning: Wipe the resin case and strap with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners.
- Strap Maintenance: Periodically check the resin strap for wear and tear. If it becomes brittle or cracked, consider replacement.
- Battery: The watch is powered by a long-lasting battery. Replacement should be done by a qualified professional to maintain water resistance.