Introduzzjoni
This manual provides detailed instructions for the operation and maintenance of your Casio G-Shock G7900A-4 Digital Sport Watch. Designed for durability and functionality, this timepiece offers advanced features including tide and moon data, world time, multiple alarms, and a stopwatch, all within a shock-resistant and water-resistant casing.

Quddiem view of the Casio G-Shock G7900A-4 Digital Sport Watch, showcasing its red resin case and digital display with time, date, and tide/moon indicators.
Karatteristiċi Ewlenin
- Reżistenti għax-xokk: Iddisinjat biex jiflaħ impatti u vibrazzjonijiet.
- 200M Water Resistant: Suitable for professional marine activity and serious surface water sports.
- Grafika tal-marea: Displays tide levels for specific dates and times.
- Dejta dwar il-Qamar: Shows moon age and phase graph.
- Low Temperature Resistant LCD: Operates reliably in temperatures down to -20°C (-4°F).
- Auto EL Backlight with Afterglow: Provides illumination for easy reading in low light conditions.
- Twissija Flash: Flashes with buzzer for alarms, hourly time signal, and timer functions.
- Ħin Dinji: Displays time for 29 time zones (48 cities).
- Allarmi b'ħafna funzjonijiet: Four daily alarms and one snooze alarm.
- Timer tal-Countdown: Measuring unit of 1 second, range up to 24 hours.
- Kronometru: 1/100 second stopwatch with measuring capacity up to 999 hours.
- Formati ta' 12/24 Siegħa: Selectable time display format.
- Kalendarju Awtomatiku: Ipprogrammat minn qabel sas-sena 2099.
Setup
Informazzjoni dwar il-batterija
The G7900A-4 watch uses one CR2025 lithium battery. The approximate battery life is 2 years under normal usage conditions. When the display becomes dim or the backlight function weakens, it may be time to replace the battery. Battery replacement should ideally be performed by a qualified technician to ensure water resistance integrity.
Issettjar tal-Ħin Inizjali
- Fil-Modalità taż-Żamma tal-Ħin, agħfas u żomm il-buttuna aġġusta Agħfas il-buttuna sakemm il-kodiċi tal-belt jibda jteptep. Dan jindika l-modalità tas-setting.
- Uża l- SPLIT / RESET u BIDU/WAQQF buttuni biex tagħżel il-kodiċi tal-belt fejn toqgħod.
- Agħfas il- MODALITÀ button to cycle through the settings: DST (Daylight Saving Time), 12/24-hour format, seconds, hour, minute, year, month, and day.
- Uża l- SPLIT / RESET u BIDU/WAQQF buttuni biex taġġusta l-valur li jteptep.
- Wara li tissettja l-valuri mixtieqa kollha, agħfas il-buttuna aġġusta buttuna biex toħroġ mill-modalità ta' l-issettjar.
Tide and Moon Data Setup
To ensure accurate tide and moon data, you must input your specific location's longitude, lunitidal interval, and UTC offset.
- Enter the Tide/Moon Data Mode by pressing the MODALITÀ button until "TIDE" or "MOON" appears.
- Agħfas u żomm il- aġġusta button until the longitude setting starts to flash.
- Uża l- SPLIT / RESET u BIDU/WAQQF buttons to adjust the longitude.
- Agħfas MODALITÀ to move to the lunitidal interval setting. Adjust this value using the SPLIT / RESET u BIDU/WAQQF buttons. Consult local tide charts or online resources for precise lunitidal interval data for your location.
- Agħfas MODALITÀ again to set the UTC offset if necessary.
- Agħfas aġġusta biex tissejvja s-settings u toħroġ.

Ġenb view of the Casio G-Shock G7900A-4, showing the robust case design and button placement.
It-tħaddim tal-Għassa
Funzjonijiet tal-buttuna
- AĠĠUSTA (Fuq ix-Xellug): Użat biex jidħol u joħroġ mill-modi tas-settings, u biex jikkonferma s-settings.
- MOD (Xellug t'isfel): Cycles through the watch's various modes (Timekeeping, Tide/Moon Data, Stopwatch 1, Stopwatch 2, Countdown Timer, Alarm, World Time).
- SPLIT/RESET (Top Right): Used for adjusting values upwards in setting modes, and for split/reset functions in stopwatch mode.
- START/STOP (Bottom Right): Used for adjusting values downwards in setting modes, and for start/stop functions in stopwatch and timer modes.
- ILLUMINATOR (Front Center): Jattiva d-dawl ta' wara EL.
Modi Overview
- Modalità taż-żamma tal-ħin:
- Juri l-ħin, id-data u l-jum tal-ġimgħa attwali. Din hija l-modalità awtomatika.
- Modalità tad-Data tal-Marea/Qamar:
- Shows the current moon phase and tide graph based on your configured location data. The moon phase indicator shows the current phase as viewed from the Northern Hemisphere. The tide graph has six segments indicating tide level.
- Stopwatch Mode (ST1 & ST2):
- Two independent 1/100 second stopwatches. Measuring capacity is 999 hours, 59 minutes, 59.99 seconds. Features include elapsed time, split time, and 1st-2nd place times. ST1 also has a 5-second auto-start feature.
- Modalità tal-Timer tal-Countdown:
- A countdown timer with a measuring unit of 1 second and a range of 24 hours. Features auto-repeat and a progress beeper.
- Mod ta 'allarm:
- Set up to four independent multi-function alarms and one snooze alarm. An hourlIs-sinjal tal-ħin y jista' jiġi attivat ukoll.
- Modalità tal-Ħin Dinji:
- View the current time in 29 time zones (48 cities). Daylight Saving Time (DST) can be toggled on or off for each city.
Illuminazzjoni
Agħfas il- ILLUMINATOR button to activate the EL backlight. The watch also features an Auto EL Backlight, which can be enabled to automatically illuminate the display with a slight angle movement of the wrist. Flash Alert causes the display to flash in conjunction with alarm sounds or timer completion.
Manutenzjoni
Reżistenza għall-Ilma
The Casio G-Shock G7900A-4 is water resistant to 200 meters (660 feet). This makes it suitable for professional marine activity and serious surface water sports. It is not recommended for scuba diving. To maintain water resistance, ensure all buttons are not operated while the watch is submerged. Avoid exposing the watch to hot water, steam, or chemicals (like those found in soaps or shampoos), as these can degrade the seals over time.

Wara view of the Casio G-Shock G7900A-4, showing the stainless steel case back with "G-SHOCK RESIST" engraving.
Kura Ġenerali
- Clean the watch regularly with a soft, dry cloth. For stubborn dirt, use a mild soap solution and rinse thoroughly, then dry.
- Evita li tesponi l-arloġġ għal temperaturi estremi, dawl tax-xemx dirett għal perjodi twal, jew kampi manjetiċi qawwija.
- The resin band and bezel can be maintained using products designed for resin protection, such as Vinylex Quick Wipes, to prevent hardening or cracking over time.
Issolvi l-problemi
- Inaccurate Tide Graph Reading:
- If your tide graph appears inaccurate after setting the lunitidal interval, try adding 7 hours to your calculated lunitidal interval value during setup. This adjustment has been noted to improve accuracy for some users.
- World Time Discrepancies:
- If certain World Time cities show an incorrect time, verify that the Daylight Saving Time (DST) setting is correctly configured for that specific city. Some regions may have unique DST rules or may not observe DST at all.
- Dim Display or Weak Backlight:
- This typically indicates a low battery. Replace the CR2025 battery. If the issue persists after battery replacement, consult a service center.
Speċifikazzjonijiet
| Numru tal-Mudell: | G7900A-4 |
| Dimensjonijiet tal-Każ: | 50 mm (dijametru) |
| Dimensjonijiet tal-Prodott: | 1 x 1 x 1 pulzieri |
| Piż tal-oġġett: | 1.55 uqija |
| Moviment: | Kwarz Ġappuniż |
| Tip ta' wiri: | Diġitali |
| Reżistenza għall-Ilma: | 200 metru (660 pied) |
| Tip ta 'batterija: | CR2025 (1 meħtieġ, inkluż) |
| Appross. Ħajja tal-batterija: | 2 snin |
| Eżattezza: | +/- 15-il sekonda fix-xahar |
| Reżistenza għal Temperatura Baxxa: | -20°C / -4°F |
| Manifattur: | Casio |

A visual guide illustrating various watch case sizes for comparison.
Garanzija u Appoġġ
Għal informazzjoni dwar il-garanzija u l-appoġġ għall-klijenti, jekk jogħġbok irreferi għall-websajt uffiċjali ta' Casio. website or the warranty card included with your purchase. Casio provides support for its products, and details can typically be found in the documentation accompanying the watch or by contacting Casio customer service directly.
Għal aktar riżorsi u informazzjoni dwar il-prodott, żur il- Ħanut Casio fuq Amazon.





