1. Introducció
Welcome to the instruction manual for your new Casio G-Shock G8900A-1CR Digital Sport Watch. This manual provides essential information on the setup, operation, maintenance, and troubleshooting of your timepiece. Please read it thoroughly to ensure proper use and to maximize the lifespan of your watch. The G-Shock series is renowned for its toughness and innovative features, designed to withstand demanding conditions.
2. Producte acabatview
The Casio G-Shock G8900A-1CR is a robust digital sport watch featuring a black resin band and a striking blue face. Its design incorporates a large case and an omni-directional shock-resistant structure, providing exceptional durability. The watch is equipped with a high-intensity LED backlight for clear visibility in low-light conditions.

Figura 2.1: Frontal view of the Casio G-Shock G8900A-1CR watch. This image displays the watch's digital display, the prominent G-Shock logo, and the four main control buttons labeled ADJUST, MODE, REVERSE, and FORWARD, along with the front-facing ILLUMINATOR button.
Els components clau inclouen:
- Visualització: Digital display showing time, date, and various mode indicators.
- Botons: Four side buttons (Adjust, Mode, Reverse, Forward) and one front button (Illuminator) for navigating functions and settings.
- Cas: Durable resin case with an aluminum bezel for enhanced protection.
- Banda: Gloss black resin band with a buckle closure.
- Fons de la caixa: Stainless steel case back, indicating water resistance and shock resistance.

Figura 2.2: posterior view of the watch, highlighting the stainless steel case back. Engravings on the case back typically include the model number, water resistance rating, and "SHOCK RESIST" emblem.

Figura 2.3: Pro lateralfile of the watch, illustrating the robust case thickness and the placement of the side control buttons (REVERSE and FORWARD).
3. Característiques
Your G-Shock G8900A-1CR watch comes equipped with a range of features designed for durability and functionality:
- Shock-Resistant Design: Built to withstand impacts and vibrations, making it suitable for various activities.
- Llum LED súper il·luminadora: A high-intensity LED backlight ensures clear visibility of the digital display in dark environments. This can be activated by the front button or by angling the wrist.
- Resistència a l'aigua: Water resistant to 200 meters (660 feet), suitable for professional marine activity and serious surface water sports. Note: Not suitable for scuba diving.
- Hora mundial: Displays the current time in 48 cities (29 time zones) and Coordinated Universal Time (UTC).
- Multi-Home Time: Allows for tracking of multiple time zones simultaneously.
- Cronòmetre: 1/1000-second stopwatch with measuring capacity up to 99:59'59.999''.
- Temporitzador de compte enrere: Measuring unit of 1 second, countdown range of 24 hours.
- Alerta de flaix: Parpelleja amb un brunzidor per a alarmes, hourly time signals, and countdown timer completion.
- Alarmes diàries: Multiple independent daily alarms.
- Formats de 12/24 hores: Time display can be switched between 12-hour and 24-hour formats.
- Calendari automàtic complet: Preprogramat fins a l'any 2099.
4. Configuració
Upon first use or after a battery change, you may need to set the current time and date. Your watch is powered by 1 Lithium Metal battery (included).
- Entering Timekeeping Mode: Ensure the watch is in the Timekeeping Mode. If not, press the MODE premeu el botó repetidament fins que es mostri l'hora actual.
- Entrant al mode de configuració: En el mode de mesura del temps, premeu i manteniu premut el botó AJUSTAR button until the city code starts to flash, indicating the setting mode.
- Selecció de configuració: Utilitza el INVERSA i AVANT buttons to cycle through the settings (City Code, DST, 12/24-hour format, Seconds, Hour, Minute, Year, Month, Day).
- Canvi de valors: Mentre un paràmetre parpelleja, utilitzeu el botó INVERSA i AVANT buttons to change its value.
- Sortint del mode de configuració: Premeu el botó AJUSTAR button to exit the setting mode and save your changes.
Consell: For detailed instructions on setting specific features like World Time, Alarms, or the Countdown Timer, refer to the comprehensive digital manual available on the official Casio website. Some users find visual guides helpful for initial setup.
5. Instruccions de funcionament
The G8900A-1CR watch offers several modes accessible via the MODE botó:
- Mode d'indicació de l'hora: Displays the current time, date, and day of the week.
- Mode hora mundial: Shows the current time in different cities around the globe. Use INVERSA i AVANT per desplaçar-se pels codis de la ciutat.
- Mode de cronòmetre: Used for measuring elapsed time. Press INICI/PARA (FORWARD button) to start/stop, and RESET (REVERSE button) to reset.
- Mode de temporitzador de compte enrere: Counts down from a specified time. Set the countdown time in setting mode, then use INICI/PARA per començar.
- Mode d'alarma: Set and activate daily alarms. Use INVERSA i AVANT to select alarms, and AJUSTAR to enter setting mode for an alarm.
Il·luminació: Premeu la part frontal IL·LUMINADOR button to activate the LED backlight. The auto-light feature can be enabled to illuminate the display when the watch is angled towards your face.
6. Manteniment
Proper care will ensure the longevity of your Casio G-Shock watch.
- Neteja: Netegeu el rellotge amb un drap suau i sec. Per a la brutícia resistent, utilitzeu un drap suau.ampened with water and a mild neutral detergent, then rinse thoroughly and dry. Avoid using volatile agents like thinner or benzine.
- Resistència a l'aigua: While highly water resistant, avoid operating buttons underwater. After exposure to saltwater, rinse the watch thoroughly with fresh water and dry it completely.
- Extrems de temperatura: Avoid exposing the watch to extreme temperatures (below -10°C or above 60°C) for prolonged periods, as this can affect accuracy and battery life.
- Substitució de la bateria: The watch uses a Lithium Metal battery. When the display becomes dim or functions become erratic, it's time for a battery replacement. It is recommended to have the battery replaced by an authorized Casio service center to ensure proper sealing and water resistance.
7. Solució De Problemes
Si teniu problemes amb el rellotge, tingueu en compte les solucions habituals següents:
| Problema | Possible causa/solució |
|---|---|
| La pantalla està tènue o en blanc. | Battery is low or depleted. Replace the battery at an authorized service center. |
| L'hora és incorrecta. | Time settings need adjustment. Refer to Section 4: Setup for instructions on setting time and date. Ensure correct city code and DST settings. |
| Els botons no responen. | Ensure the watch is not in a locked mode (if applicable, though this model typically doesn't have a button lock). If wet, dry thoroughly. If problem persists, contact support. |
| Aigua dins del rellotge. | This indicates a breach in water resistance. Stop using the watch immediately and take it to an authorized service center for inspection and repair. |
For issues not covered here, or for advanced troubleshooting, please contact Casio customer support or visit their official weblloc.
8. Especificacions
Detailed specifications for the Casio G-Shock G8900A-1CR watch:
- Número de model: G8900A-1CR
- Dimensions: Approximately 1 x 1 x 1 inches (Case); 5.93 ounces (Weight)
- Material de la caixa: Resina
- Material de la banda: Resina
- Tipus de visualització: Digital
- Moviment: Quars japonès
- Resistència a l'aigua: 200 metres (660 peus)
- Tipus de bateria: 1 bateria de metall de liti (inclosa)
- Fabricant: Casio
- Primera data disponible: 1 de novembre de 2011

Figure 8.1: Watch size comparison diagram. This image provides a visual reference for the relative size of different watch cases, helping to illustrate the substantial size of the G-Shock G8900A-1CR.
9. Garantia i Suport
Your Casio G-Shock G8900A-1CR watch is manufactured by Casio, a company known for its commitment to quality and durability. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Casio weblloc.
For customer support, service inquiries, or to find an authorized service center, please visit the official Casio website or contact their customer service department. You can also explore the Botiga Casio a Amazon per a més informació sobre el producte i accessoris.





