1. Introduction
This manual provides detailed instructions for the proper use and care of your Casio G-Shock Carbon Core Guard Analog-Digital Watch, model GMA-S2200M-7ADR. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece. This watch features a robust Carbon Core Guard structure, 200-meter water resistance, and various timekeeping functions.
2. Initial Setup
2.1 Button Functions
Your watch features four primary buttons: A (Adjust), B (Reverse/Light), C (Mode), and D (Forward/Start). Refer to the image below for button identification.

Image: Left side of the watch, displaying the 'ADJUST' and 'MODE' buttons.

Image: Right side of the watch, displaying the 'START' and 'RESET' buttons.
2.2 Setting the Home City and Time
- In the Timekeeping Mode, hold down button A (Adjust) for approximately two seconds until the city code starts to flash. This indicates the setting mode.
- Use buttons B (Reverse) and D (Forward) to select your desired Home City code.
- Press button C (Mode) to cycle through the settings: City Code → DST (Daylight Saving Time) → 12/24-hour format → Seconds → Hour → Minute → Year → Month → Day → Illumination Duration → Illumination Color.
- Use buttons B and D to change the flashing setting.
- After configuring all settings, press button A to exit the setting mode. The digital time will adjust accordingly.
2.3 Adjusting Analog Hands
The analog hands automatically synchronize with the digital time. If they are misaligned, perform the following steps:
- In the Timekeeping Mode, hold down button C (Mode) for approximately three seconds until the digital display shows 'H-SET'.
- Use buttons B and D to adjust the analog hands to the 12 o'clock position.
- Press button A to return to the Timekeeping Mode. The hands will automatically move to the current digital time.
3. Operating Modes
Press button C (Mode) to cycle through the different watch modes:
- Timekeeping Mode: Displays the current time and date.
- World Time Mode: Displays the current time in 48 cities (31 time zones) around the world.
- Stopwatch Mode: Measures elapsed time, split times, and two finishes.
- Timer Mode: A countdown timer that can be set up to 24 hours.
- Alarm Mode: Set up to 5 daily alarms and an hourly time signal.
3.1 Using the Stopwatch
- Navigate to the Stopwatch Mode using button C.
- Press button D (Start) to begin timing.
- Press button D again to stop timing.
- Press button A (Adjust) to reset the stopwatch to zero.
3.2 Setting an Alarm
- Navigate to the Alarm Mode using button C.
- Use buttons B and D to select the alarm number (AL1 to AL5) or the Hourly Time Signal (SIG).
- Hold down button A (Adjust) until the alarm time starts to flash.
- Use button C to move between hour and minute settings.
- Use buttons B and D to change the flashing value.
- Press button A to confirm and exit the setting mode.
4. Maintenance
4.1 Water Resistance
This watch is water-resistant to 200 meters (20 BAR). This means it is suitable for recreational scuba diving. Do not operate buttons while the watch is wet or submerged. After exposure to saltwater, rinse the watch with fresh water and wipe it dry.
4.2 Cleaning
Wipe the watch with a soft, dry cloth to remove dirt and moisture. For stubborn dirt, use a soft cloth dampened with a mild soap solution, then wipe dry. Avoid using chemical cleaners or solvents as they may damage the resin materials.
4.3 Battery Replacement
The watch is powered by a Quartz movement with a battery. When the display becomes dim or functions become erratic, it indicates a low battery. Battery replacement should be performed by an authorized Casio service center to ensure proper sealing and water resistance.
4.4 General Care
- Avoid exposing the watch to extreme temperatures, direct sunlight for prolonged periods, or strong magnetic fields.
- The resin band and case are durable but can be damaged by harsh chemicals or excessive force.
- Regularly check the watch for any signs of damage or wear.
5. Troubleshooting
5.1 Time is Incorrect
- Digital Time: Ensure your Home City setting is correct and that DST (Daylight Saving Time) is set appropriately. Refer to Section 2.2.
- Analog Hands: If analog hands do not match the digital time, perform the hand alignment procedure described in Section 2.3.
5.2 Display is Blank or Dim
- This may indicate a low battery. Contact an authorized service center for battery replacement.
- Ensure the watch is not in a power-saving mode (if applicable, though this model typically does not have an advanced power-saving feature that blanks the display entirely).
5.3 Buttons Not Responding
- Ensure the watch is not submerged in water or excessively wet, which can interfere with button operation.
- If the watch has been subjected to a strong impact, internal components may be damaged. Seek professional service.
6. Specifications
The following table outlines the key specifications for the Casio G-Shock GMA-S2200M-7ADR watch:
| Feature | Detail |
|---|---|
| Model Number | GMA-S2200M-7ADR |
| Display Type | Analog-Digital |
| Movement Type | Quartz |
| Case Material | Resin (Carbon Core Guard) |
| Band Material | Resin |
| Crystal Material | Mineral Glass |
| Water Resistance Depth | 200 Metres (20 BAR) |
| Case Diameter | 45.7 Millimetres |
| Case Thickness | 12.1 Millimetres |
| Item Weight | 46 Grams |
| Product Dimensions | 20 x 1.2 x 4.6 cm |
| Closure Type | Buckle |
| Features | World Time, Stopwatch, Timer, 5 Alarms, LED Light |
For a visual representation of the watch dimensions, refer to the image below:

Image: Watch dimensions, illustrating the 48.3 mm height in comparison to a standard credit card.
7. Warranty & Support
7.1 Warranty Information
Your Casio G-Shock watch comes with a 2-year manufacturer warranty from the date of purchase. An additional 6 months warranty is provided for products registered online.
To avail warranty:
- Register your product on https://register.casio.in/.
- Produce the original bill copy/invoice at an authorized Casio service center. The warranty card and stamp are not mandatory for online purchases.
7.2 Customer Support
For any service-related inquiries or feedback, please contact Casio India:
- Helpline Number: 011-66999200
- Email: casiocare@casio.co.in
Manufacturer: Casio India Co Pvt Ltd, A-41, 1st Floor, MCIE, Mathura Road, New Delhi-110044
Importer: Casio India Co Pvt Ltd, A-41, 1st Floor, MCIE, Mathura Road, New Delhi-110044







