pengenalan
This manual provides detailed instructions for the proper use, setup, and maintenance of your Casio G-Shock G7900-1 Digital Sport Watch. Designed for durability and functionality, this timepiece offers a range of features including shock resistance, water resistance, tide and moon data, and multiple alarms. Please read this manual thoroughly to ensure optimal performance and longevity of your watch.
Produk Selesaiview

Rajah 1: Depan view of the Casio G-Shock G7900-1 watch, showcasing its robust design and digital display with moon and tide indicators.
The Casio G-Shock G7900-1 is engineered for resilience, featuring a four-point design protection and large, easy-to-operate buttons. Its digital display provides clear readability, even in low temperatures. Key features include:
- Tahan Kejutan: Built to withstand impacts and vibrations.
- Kalis Air 200M: Sesuai untuk aktiviti marin profesional dan sukan air permukaan yang serius.
- Low Temperature Resistant LCD: Operates reliably in temperatures as low as -20°C (-4°F).
- Tide Graph & Moon Data: Provides essential information for marine activities.
- Masa Dunia: Displays time for 29 time zones (48 cities).
- Berbilang Penggera: Includes 4 multi-function alarms and 1 snooze alarm.
- Jam randik & Pemasa Undur: Precise timing functions for various needs.
- Auto EL Backlight with Afterglow: Ensures visibility in dark conditions.

Figure 2: The Casio G-Shock G7900-1 watch worn on a wrist, demonstrating its comfortable fit and prominent display.
Persediaan
Tetapan Masa dan Tarikh Permulaan
Upon first use or after a battery change, you will need to set the current time and date. Refer to the detailed instructions in the full user manual for specific button operations. Generally, you will use the 'MODE' button to navigate through settings and 'ADJUST' or 'START/STOP' buttons to change values.
Setting Tide and Moon Data
To utilize the tide graph and moon data features, you must input your current location's longitude and lunitidal interval. This allows the watch to accurately calculate tide levels and moon phases for your specific area. Consult the comprehensive manual for precise input procedures.
Maklumat Bateri
The G7900-1 uses a CR2025 battery, providing an approximate battery life of 2 years. When the display becomes dim or functions are erratic, it may be time to replace the battery. It is recommended to have battery replacement performed by a qualified technician to ensure water resistance integrity.
Arahan Operasi
Navigating Modes
Tekan ke MODE button (bottom left) to cycle through the watch's various modes: Timekeeping, Tide/Moon Data, World Time, Alarm, Stopwatch, and Countdown Timer. The current mode is typically indicated on the display.
Menggunakan Jam Randik
In Stopwatch mode, press the MULA/BERHENTI button (bottom right) to start and stop the timer. Press the SPLIT / RESET button (top right) to record split times or to reset the stopwatch when it is stopped.
Menetapkan Penggera
In Alarm mode, use the SESUAIKAN button (top left) to select the alarm number. Use the MULA/BERHENTI button to change the hour and minute settings. The watch features 4 multi-function alarms and one snooze alarm. The hourly time signal can also be activated or deactivated in this mode.
Activating Backlight
Tekan ke PENERANG button (center bottom) to activate the Auto EL Backlight. The afterglow feature keeps the display illuminated for a short period after the button is released.
Penyelenggaraan
Membersihkan Jam Tangan Anda
Regularly clean your watch with a soft, dry cloth. For stubborn dirt, use a mild soap solution and a soft brush, then rinse thoroughly with fresh water and dry completely. Avoid using chemical cleaners or solvents as they may damage the watch's materials.
Penjagaan Tahan Air
While your G-Shock is water resistant to 200 meters, it is important to rinse the watch with fresh water after exposure to saltwater or chlorine to prevent corrosion. Do not operate buttons while the watch is submerged in water or wet, as this can compromise the water resistance seals.
Penggantian Bateri
When the battery needs replacement, it is highly recommended to have it done by an authorized Casio service center or a professional watch repair shop. This ensures that the watch's water resistance is properly re-sealed and maintained after the battery compartment is opened.
Menyelesaikan masalah
Display is Dim or Blank
This usually indicates a low battery. Replace the CR2025 battery. If the issue persists after battery replacement, contact customer support.
Time is Inaccurate
Manually adjust the time settings as described in the "Setup" section. Note that the watch has an accuracy of +/- 15 seconds per month. If the deviation is significantly greater, a professional inspection may be required.
Butang Tidak Menjawab
Ensure the watch is not in a locked mode (if applicable, though G7900-1 typically doesn't have a button lock). If buttons are stuck, gently clean around them. If the problem persists, it may indicate an internal mechanism issue requiring professional service.
Water Inside the Watch
Immediately take the watch to an authorized service center. Do not attempt to open the watch yourself, as this will void the warranty and likely cause further damage. Water intrusion can lead to irreversible damage to the internal components.
Spesifikasi
| Ciri | Perincian |
|---|---|
| Nombor Model | G-7900-1DR |
| Dimensi | 1 x 1 x 1 inci; 2.41 auns |
| Tahan Air | 200 meter (660 kaki) |
| Jenis Bateri | CR2025 |
| lebih kurang Hayat Bateri | 2 tahun |
| Ketepatan | +/- 15 seconds per month |
| Jenis Paparan | Digital, Low Temperature Resistant LCD |
| Ciri Khas | Shock Resistant, Tide Graph, Moon Data, World Time, 4 Multi-function Alarms + 1 Snooze, Hourly Time Signal, Countdown Timer, 1/100 Second Stopwatch, Auto EL Backlight with Afterglow, Flash Alert, Auto Calendar (pre-programmed until 2099), 12/24 Hour Formats, Button Operation Tone on/off. |
| Case/Band Material | damar |
Waranti dan Sokongan
Your Casio G-Shock G7900-1 watch is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions, including warranty period and coverage details.
For further assistance, technical support, or to locate an authorized service center, please visit the official Casio weblaman web atau hubungi jabatan khidmat pelanggan mereka. Anda boleh mendapatkan maklumat lanjut dan produk di Kedai Casio.