G-Shock GA-100BL-1AER - Watch CASIO - Free user manual and instructions
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| Product Type | Analog-Digital Watch |
| Brand | Casio |
| Model | G-Shock GA-100BL-1AER |
| Case Material | Resin |
| Band Material | Resin |
| Case Diameter | 55.0 mm |
| Case Thickness | 16.9 mm |
| Weight | 70 g |
| Power Source | CR1220 battery |
| Battery Life | Approx. 2 years |
| Water Resistance | 200 meters (20 bar) |
| Shock Resistance | Yes |
| Display Type | Analog dial with digital LCD |
| Clock Functions | World time (48 cities), 1/1000 sec stopwatch, countdown timer, daily alarms, hourly time signal, auto-calendar |
| Light | LED auto light (Super Illuminator) |
| Accuracy | ±15 seconds per month |
| Operating Temperature | -10°C to +60°C (14°F to 140°F) |
| Cleaning and Care | Wipe with a soft, dry cloth; avoid solvents and abrasives |
| Safety Precautions | Not suitable for scuba diving; keep away from strong magnets and static electricity |
| Spare Parts and Repairability | Battery replacement possible; refer to official service centers for repairs |
Frequently Asked Questions - G-Shock GA-100BL-1AER CASIO
How do I set the time on the Casio G-Shock GA-100BL-1AER?
Press and hold the 'Adjust' button (usually top left) until the seconds start flashing. Use the 'Mode' button to select the field to adjust (seconds, minutes, hours, etc.), and press the 'Start/Stop' or 'Forward' button to change the value. Press 'Adjust' again to exit.
Is the Casio GA-100BL-1AER suitable for swimming?
Yes, it has a water resistance rating of 200 meters (20 bar), which makes it suitable for swimming and snorkeling, but not for scuba diving with compressed air tanks.
How do I use the stopwatch?
Press the 'Mode' button repeatedly until you reach stopwatch mode (STW). Press 'Start/Stop' to begin timing, and again to stop. Press 'Reset' to zero the stopwatch.
How long does the battery last?
The CR1220 battery typically lasts about 2 years under normal use. When the battery is low, the digital display may become dim or the backlight may not work properly.
Can I replace the battery myself?
Yes, the battery can be replaced by removing the back cover. However, ensure the gasket is properly seated to maintain water resistance. If unsure, take it to a professional.
How do I set the alarm?
Press 'Mode' to enter alarm mode (ALM). Hold 'Adjust' until the hour digits flash. Use 'Start/Stop' to set the hour and minute. Press 'Mode' to toggle alarm on/off. Press 'Adjust' to return.
What is the world time function?
The world time function lets you display the current time in any of 48 cities worldwide. Press 'Mode' to enter world time mode (WT), then use 'Start/Stop' to scroll through cities.
How do I turn on the light?
Press the 'Light' button (usually bottom left) to activate the LED backlight. It illuminates the display for a few seconds. There is also an auto-light feature activated by turning your wrist.
How do I adjust the time zone?
In timekeeping mode, hold 'Adjust' until seconds flash. Press 'Mode' twice to reach time zone setting. Use 'Start/Stop' to select your city code. Refer to the manual for a full list of city codes.
What should I do if the watch stops working?
First, check if the battery is dead. Replace it if necessary. If the watch still does not function, it may need service. Contact Casio support or an authorized service center. Avoid opening the watch yourself if under warranty.
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