How to Set the Time on the G-SHOCK GM-2100

The G-SHOCK GM-B2100 combines durability with sleek design, making it a favorite among analog-digital watch enthusiasts. However, setting the time manually can be confusing if you’re unfamiliar with G-SHOCK’s button system. This guide walks you through each step clearly

🕒 Manual Time Setting Instructio

✅ Step 1: Enter Timekeeping Mode

• Make sure your watch is in regular timekeeping mode.
• Press and hold the top-left button (A) for about 3 seconds, until the digital display starts flashing.
  ➤ This means you are now in the Time Setting Mode.

✅ Step 2: Select Your Home City

• Use the bottom-right (D) and top-right (B) buttons to scroll through city codes.
• Choose your time zone (e.g., LON for London, NYC for New York, TYO for Tokyo).

✅ Step 3: Daylight Saving Time (DST) Setting

• Press the bottom-left button (C) to switch to the DST setting.
• Use (B) or (D) to toggle DST ON or OFF.

✅ Step 4: Choose 12-Hour or 24-Hour Format

• Press (C) again to enter the hour format setting.
• Use (B) or (D) to choose between 12H or 24H format.

✅ Step 5: Adjust Time (Seconds, Hours, Minutes)

• Keep pressing (C) to cycle through:
  • Seconds
  • Hours
  • Minutes
• Use (B) or (D) to change each value as needed.

✅ Step 6: Set Date (Year, Month, Day)

• Continue pressing (C) to reach:
  • Year
  • Month
  • Day
• Again, use (B) or (D) to adjust.

✅ Step 7: Save and Exit

• When you’re done, press the top-left button (A) to exit the setting mode.
• The analog hands will automatically realign to match the digital time.

🔧 Optional: Adjusting Analog Hands (If Misaligned)

Sometimes, the hands may not match the digital time even after setting. You can manually calibrate them:

How to Calibrate:

1. Hold (A) for about 5 seconds until “H-SET” appears.
2. Press (C) to switch between hour and minute hands.
3. Use (B) or (D) to move hands until they point to 12:00 exactly.
4. Press (A) again to exit. The watch will now sync hands with digital time.

📝 Final Notes

• This guide is for users who prefer manual control and do not wish to use any mobile apps or Bluetooth features.
• Always double-check the AM/PM if you’re using 12-hour format.
• Avoid setting the date between 9 PM and 1 AM to prevent misalignment of the day change.