G-Shock GBD-100-2ER - Watch CASIO - Free user manual and instructions
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| Type | Digital Watch |
| Brand | Casio |
| Model | G-Shock GBD-100-2ER |
| Dimensions | 48.9 x 45.6 x 15.5 mm |
| Weight | Approx. 66 g |
| Case/Bezel Material | Resin |
| Band | Resin Band |
| Glass | Mineral Glass |
| Water Resistance | 200 meters (ISO 6425) |
| Battery | CR2032 (approx. 2 years life) |
| Display | Digital, LED backlight |
| Bluetooth | Yes (Bluetooth Low Energy) |
| Sensor | Accelerometer (step counter) |
| Functions | World time, stopwatch, timer, alarm, activity tracking, phone finder |
| Power Supply | 1 x CR2032 battery |
| Cleaning | Wipe with soft cloth; avoid solvents |
| Spare Parts | Battery, band, bezel available via Casio service centers |
| Repair Information | Refer to official Casio repair centers; do not disassemble yourself |
Frequently Asked Questions - G-Shock GBD-100-2ER CASIO
How do I pair my G-Shock GBD-100-2ER with my smartphone?
Download the Casio Connected app from your app store. Enable Bluetooth on your phone, then press and hold the upper left button (ADJUST) on the watch until the Bluetooth icon flashes. Follow the app instructions to complete pairing.
Is the GBD-100-2ER suitable for swimming?
Yes, it has 200 meters water resistance, making it suitable for swimming and snorkeling. However, avoid pressing buttons underwater.
How do I change the battery?
The watch uses a CR2032 battery. It is recommended to have the battery replaced by an authorized Casio service center to maintain water resistance. Do not open the watch yourself.
What does the step counter track?
The built-in accelerometer counts steps, distance, and calories burned. Data syncs with the Casio Connected app for detailed activity tracking.
How do I set the time manually?
Press and hold the upper left button (ADJUST) until the seconds flash. Use the upper right and lower right buttons to adjust. Press ADJUST to move between settings. The watch will sync via Bluetooth when paired, but manual setting is also possible.
Can I use the stopwatch while the timer is running?
No, the stopwatch and timer are separate modes. You can switch between them using the MODE button, but they cannot run simultaneously.
What is the accuracy of the watch?
The watch has a standard quartz accuracy of ±15 seconds per month when not synced via Bluetooth. With Bluetooth time sync, it updates automatically from your phone.
How do I clean the watch band?
Clean the resin band with a soft, damp cloth. Do not use harsh chemicals, alcohol, or abrasive cleaners, as they can damage the resin.
My watch is not connecting to Bluetooth. What should I do?
Ensure Bluetooth is enabled on your phone and the Casio Connected app is updated. Restart both devices. If the issue persists, unpair the watch in the app and re-pair it. Also check that the watch battery is not low.
How do I set an alarm?
Press MODE to enter the alarm mode. Press and hold ADJUST until the hour digits flash. Use the upper right and lower right buttons to set the hour and minute. Press ADJUST to confirm. Toggle the alarm on/off using the upper right button.
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