Introdución
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Casio G-Shock GD-400-1B2CR Digital Quartz Sport Watch. Designed for durability and functionality, this timepiece features shock resistance, 200-meter water resistance, an Auto Super Illuminator LED with Flash Alert, World Time, five daily alarms, and a 1/100th second stopwatch. Please read this manual thoroughly to ensure optimal performance and longevity of your watch.
Configuración
Your G-Shock watch comes with a pre-installed Lithium Metal battery. Upon first use, or after a battery change, you may need to set the current time and date.
Axuste da hora e da data
- No modo de hora normal, manteña premido o botón Axustar botón ata que o código da cidade comece a parpadear. Isto indica o modo de configuración.
- Usa o REVERSO e ADIANTE buttons to select your desired city code (time zone).
- Preme o MODO button to cycle through the settings: DST (Daylight Saving Time), 12/24-hour format, Seconds, Hour, Minute, Year, Month, Day.
- Usa o REVERSO e ADIANTE botóns para axustar o valor que parpadea.
- Unha vez que todos os axustes sexan correctos, prema o botón Axustar botón para saír do modo de configuración.

Imaxe: Fronte view of the Casio G-Shock GD-400-1B2CR watch, displaying its digital interface and robust design.
Instrucións de funcionamento
Modos de navegación
Preme o MODO button to cycle through the watch's various functions:
- Modo de hora: Mostra a hora e data actuais.
- Modo hora mundial: Shows the current time in various cities around the globe.
- Modo cronómetro: Measures elapsed time with 1/100th second accuracy.
- Modo de temporizador de conta atrás: Allows setting a countdown from a specified time.
- Modo de alarma: Configura ata cinco alarmas diarias independentes.
Función de hora mundial
In World Time Mode, use the REVERSO e ADIANTE buttons to scroll through different city codes and view their current times.
Usando o cronómetro
No modo cronómetro:
- Preme o INICIAR/PARAR botón para iniciar e deter o cronómetro.
- Preme o Axustar botón para poñer o cronómetro a cero.
- The watch supports split time measurements.
Configuración de alarmas
In Alarm Mode:
- Usa o REVERSO e ADIANTE buttons to select one of the five alarms (AL1 to AL5) or the Hourly Sinal horario (SIG).
- Manteña premido o Axustar button until the alarm time starts to flash.
- Usa o MODO button to move between hour and minute settings.
- Usa o REVERSO e ADIANTE botóns para axustar o valor que parpadea.
- Preme o Axustar botón para confirmar e saír.
Super Illuminator LED and Flash Alert
Preme o LUZ button to illuminate the display. The Auto Super Illuminator feature can be enabled to automatically light up the display when the watch is tilted towards your face. The Flash Alert function causes the backlight to flash for alarms, hourly time signals, and countdown timer alerts.
Función de silencio
The watch features a mute function to silence button operation tones. To activate or deactivate, refer to the detailed instructions in the full Casio module manual.

Image: The Casio G-Shock GD-400-1B2CR watch displayed on a wrist, showcasing o seu tamaño e axuste.
Vídeo: Un overview of the Casio G-Shock watch, demonstrating its features and design. This video is provided by the seller.
Mantemento
Resistencia á auga
Your watch is water resistant to 200 meters (660 feet). This rating makes it suitable for professional marine activity and serious surface water sports. However, it is not suitable for diving. Avoid operating buttons while the watch is wet or submerged to prevent water ingress.
Limpeza
To maintain the appearance and functionality of your watch, regularly wipe it with a soft, dry cloth. For stubborn dirt, especially on the resin band and case, use a mild soap solution and a soft brush, then rinse thoroughly with fresh water and dry completely. Avoid using harsh chemicals or solvents.
Substitución da batería
The watch uses one Lithium Metal battery. When the battery power is low, the display may dim or functions may become unreliable. Battery replacement should be performed by a qualified watch technician or an authorized Casio service center to ensure proper sealing and water resistance.
Resolución de problemas
- Pantalla en branco: Check if the battery is depleted. If so, replace the battery.
- Hora incorrecta: Re-enter the Timekeeping Mode and adjust the time and date settings as described in the Setup section. Ensure the correct city code and DST setting are selected.
- Botóns que non responden: Ensure the watch is not in a locked mode (if applicable, refer to the full module manual). If the issue persists, a battery reset or professional inspection may be required.
- Exhibición de auga dentro: If condensation or water appears inside the watch, cease use immediately and take it to an authorized service center. This indicates a breach in water resistance.
Especificacións
| Característica | Detalle |
|---|---|
| Número de modelo | GD-400-1B2CR |
| Diámetro da caixa | 49.7 mm |
| Resistencia á auga | 200 m (660 pés) |
| Movemento | Cuarzo |
| Material | Resina |
| Tipo de batería | 1 batería de metal de litio (incluída) |
| Resistente a choque | Si |
| Iluminación | Auto Super Illuminator LED with Flash Alert |
| Tempo do mundo | Si |
| Alarmas | 5 alarmas diarias |
| Cronómetro | 1/100th Sec. Stopwatch |
| Función de silencio | Si |
| Aviso de batería baixa | Si |
Garantía e Soporte
Para obter información sobre a garantía, o servizo técnico ou a asistencia adicional, consulte a páxina oficial de Casio. website or contact Casio customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.





