G-Shock GA-800 - Watch CASIO - Free user manual and instructions
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| Product Type | Digital-Analog Watch |
| Brand | Casio |
| Model | G-Shock GA-800 |
| Water Resistance | 200 meters (20 bar) |
| Shock Resistance | Yes |
| Case Material | Resin |
| Band Material | Resin |
| Glass Type | Mineral Glass |
| Display Type | Analog and Digital |
| Dimensions (Case Diameter) | Approx. 54.1 mm |
| Thickness | Approx. 16.7 mm |
| Weight | Approx. 70 g |
| Power Source | CR2016 battery |
| Battery Life | Approx. 3 years |
| Accuracy | ±15 seconds per month |
| Stopwatch | 1/100-second, 24-hour counter |
| Countdown Timer | Up to 24 hours |
| Alarm | Multi-function alarms with snooze |
| World Time | 31 time zones (48 cities + UTC) |
| Illumination | Super Illuminator (LED light) |
| Calendar | Auto-calendar (pre-programmed to year 2099) |
| Care Instructions | Rinse with fresh water after saltwater use; avoid harsh chemicals; replace battery every 3 years |
| Safety Warnings | Not suitable for diving; keep away from strong magnetic fields; do not disassemble |
| Spare Parts & Repairability | Battery and band available; authorized service centers recommended |
| General Information | Designed for outdoor and sports use; ISO 764 anti-magnetic resistance |
Frequently Asked Questions - G-Shock GA-800 CASIO
How do I set the time on my G-Shock GA-800?
Press and hold the adjust button (bottom left) until seconds flash. Use the mode button to move through settings and the forward button to change values. Refer to the manual for detailed instructions.
Is the G-Shock GA-800 suitable for diving?
No, the watch is water resistant to 200 meters but is not certified for diving. It is suitable for surface swimming and snorkeling only.
How do I replace the battery?
Remove the back cover using a screwdriver, replace with a CR2016 battery, and ensure the gasket is properly seated for water resistance. It is recommended to have it done by a professional.
What does the 'Shock Resistance' feature mean?
The watch is built to withstand impact and vibration from daily use, including accidental drops, sports, and outdoor activities. It meets Casio's G-Shock standards.
How do I use the stopwatch?
In normal timekeeping mode, press the mode button repeatedly until the stopwatch screen appears. Press the start button to start/stop, and the reset button to clear. The stopwatch measures up to 24 hours in 1/100-second increments.
Can I change the band on my GA-800?
Yes, the resin band can be replaced. Use a spring bar tool to remove the old band and attach a new one. Genuine Casio bands are available from authorized dealers.
How do I set an alarm?
Press the mode button until the alarm screen appears. Press the adjust button to edit alarm time. Use the forward button to set hour/minute. Confirm by pressing mode again. The alarm has a snooze function.
What is the battery life of the GA-800?
Under normal use, the CR2016 battery lasts approximately 3 years. Excessive use of backlight or alarms may reduce battery life.
Is the watch resistant to magnetism?
Yes, the GA-800 is ISO 764 certified anti-magnetic, meaning it resists magnetic fields up to 4,800 A/m.
How do I clean my G-Shock watch?
Clean with a soft cloth dampened with mild soap and water. Avoid solvents or abrasive cleaners. After exposure to salt water, rinse thoroughly with fresh water.
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USER MANUAL G-Shock GA-800 CASIO
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Product information
Brand : CASIO
Model : G-Shock GA-800
Category : Watch