G-Shock GW-9400-1BER - Watch CASIO - Free user manual and instructions
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| Product Type | Wristwatch |
| Brand | Casio |
| Model | G-Shock GW-9400-1BER (Rangeman) |
| Case Size (L x W x H) | 53.4 x 52.4 x 18.0 mm |
| Weight | Approx. 93 g |
| Power Supply | Tough Solar (solar rechargeable) |
| Battery Life | Approx. 6 months on full charge without further solar exposure |
| Water Resistance | 200 meters (20 ATM) |
| Shock Resistance | Yes (G-Shock standard) |
| Sensors | Triple Sensor: Altimeter, Barometer, Compass, Thermometer |
| Radio-Controlled Time | Auto receipt (Multi-Band 6) |
| Display Type | Digital with LED backlight (Super Illuminator) |
| Alarm | Multi-function alarms (5 daily + 1 snooze) |
| Stopwatch | 1/100 sec - 24 hours |
| Timer | Countdown timer (up to 24 hours) |
| World Time | 31 time zones (48 cities + UTC) |
| Special Functions | Moon data, Tide data, Sunrise/Sunset, Full auto calendar |
| Case Material | Resin / Stainless steel back cover |
| Band Material | Resin strap |
| Glass Type | Mineral glass |
| Maintenance & Cleaning | Wipe with a soft, dry cloth; avoid solvents; for metal parts, use a damp cloth and dry thoroughly. |
| Safety Notices | Do not expose to extreme temperatures; avoid strong magnetic fields; replace battery only by a qualified technician. |
| Spare Parts & Repairability | Battery and strap replacements are possible; service by Casio authorized centers recommended. |
| Certifications | Magnetic resistant, ISO 764 compliant |
Frequently Asked Questions - G-Shock GW-9400-1BER CASIO
How do I manually set the time on the GW-9400?
Press and hold the adjust button (upper right) until the seconds flash. Then use the forward and reverse buttons to set time/date. The watch will usually sync automatically via radio, but manual setting is possible.
Is the watch solar powered?
Yes, it features Tough Solar technology. The face recharges the battery in any light. Avoid covering the solar panel for long periods.
What is the water resistance rating?
It is rated for 200 meters (20 ATM). Suitable for swimming, snorkeling, and recreational scuba diving. Not for deep-sea diving with helium.
How do I use the altimeter?
In altimeter mode, the watch measures atmospheric pressure. Calibrate it by entering a known altitude in SET mode. The sensor is temperature compensated for accuracy.
Can I replace the battery myself?
The battery is rechargeable and not user-replaceable. If it fails, contact a Casio service center. The watch is designed to last years with proper charging.
How do I set the compass to correct for declination?
Enter compass mode, press and hold the adjust button. Then set the declination angle based on your location (map). The watch supports ±90° correction.
Why is my watch not receiving radio time?
Ensure you are in a location where the signal is strong (e.g., near a window at night). The watch tries automatically at 2:00, 5:00, and 11:00 p.m. You can also manually initiate reception by pressing the forward button in timekeeping mode.
How do I change the strap?
The strap is attached with spring bars. Use a spring bar tool to remove and install new straps. Casio offers replacement straps compatible with the GW-9400.
What does the Super Illuminator backlight do?
It uses a high-brightness LED to light the display. It can be set to auto-illumination when tilting the watch (Auto Light) or manual via the light button.
How do I reset the watch to factory settings?
Press and hold the adjust, forward, and light buttons simultaneously for about 3 seconds. All settings will be cleared. Then perform a manual time sync or set time again.
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