G-Shock GA-110JOP-1A4 - Watch CASIO - Free user manual and instructions
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| Product Type | Wristwatch |
| Brand | Casio |
| Model | G-Shock GA-110JOP-1A4 |
| Category | Watch |
| Movement | Quartz (Analog + Digital) |
| Shock Resistance | Yes |
| Water Resistance | 200 meters (20 bar) |
| Case Material | Resin / Stainless steel |
| Band Material | Resin |
| Crystal | Mineral Glass |
| Dimensions (Case) | 51.9 × 48.8 × 16.9 mm |
| Weight | Approx. 167 g |
| Power Source | Battery (CR1220, approx. 2 years) |
| Display | Analog hands + Digital LCD |
| LED Light | Yes (Auto Light) |
| World Time | 48 cities + UTC |
| Stopwatch | 1/1000 sec, 100 hours |
| Countdown Timer | Yes |
| Alarms | 5 daily alarms + snooze |
| Calendar | Full auto-calendar (to 2099) |
| Accuracy | ±15 seconds per month |
| Maintenance | Wipe with soft cloth; avoid solvents |
| Safety | Not suitable for diving (only swimming) |
| Spare Parts | Battery, band, glass available at service centers |
| Repairability | Modular construction, professional service recommended |
Frequently Asked Questions - G-Shock GA-110JOP-1A4 CASIO
How do I set the time on my Casio G-Shock GA-110JOP-1A4?
To set the time, press the Adjust button (top left) until the seconds start flashing. Use the Mode button to select the item to adjust (seconds, minutes, hours, etc.) and the St/Stop button to change the value. Press Adjust again to exit.
Is the GA-110JOP-1A4 waterproof?
Yes, it has 200 meters water resistance, suitable for swimming and snorkeling, but not for scuba diving.
How do I change the battery?
The watch uses a CR1220 battery. To replace, remove the back cover with a small screwdriver, carefully replace the battery, and ensure the gasket is properly seated for water resistance. It is recommended to have it done by a professional.
What are the main functions of this watch?
Key functions include world time (48 cities), stopwatch (1/1000 sec), countdown timer, 5 daily alarms with snooze, full auto-calendar, and LED light with auto light feature.
How do I use the stopwatch?
Press the Mode button until you reach Stopwatch mode. Press St/Stop to start/stop, and Reset to reset.
Can I replace the watch band?
Yes, the band is removable. Use a spring bar tool to remove and replace with compatible G-Shock resin bands.
Why is my watch not lighting up automatically?
Ensure the Auto Light feature is activated: press and hold the Light button for a few seconds until an indicator appears. Also, the light only activates when the watch is tilted 45° in low light.
How do I set the alarms?
Press Mode until you reach Alarm mode. Press Adjust to change the alarm time. Use Mode to select the alarm number, and St/Stop to toggle on/off.
What is the weight of the watch?
The approximate weight is 167 grams.
How do I clean the watch?
Wipe with a soft, dry cloth. Avoid using chemicals or abrasive cleaners. For saltwater, rinse with fresh water and dry.
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