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G-Shock GBA-900UU-3AER - Casio - G-Shock

Not AvailableG-Shock GBA-900UU-3AER - Casio - G-Shock

Stay connected with this Casio watch from G-Shock. This watch can be connected to your smartphone ...

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Product Information

Full details

The G-Shock GBA-900UU-3AER is engineered for active individuals and adventurers seeking a robust and connected timepiece. Its primary advantage is the seamless Bluetooth® link to your smartphone, enabling detailed tracking of distance and steps, and providing access to your activity history. Designed for durability in challenging environments, this watch offers exceptional performance, though users should note that its full GPS functionality initially leverages the connected smartphone, and the battery requires replacement approximately every two years.

All features

SeriesG-Shock
Model Part NumberGBA-900UU-3AER
BrandCASIO

Extended Product Information

FAQs

How do I connect my G-Shock GBA-900UU-3AER to my phone?

Download the official G-SHOCK Connected app from your smartphone's app store. Open the app, enable Bluetooth® on your phone, and follow the in-app instructions to put your watch into pairing mode and complete the connection.

Is this watch waterproof?

Yes, the G-Shock GBA-900UU-3AER is water-resistant up to 200 meters (20 bars), making it suitable for swimming, snorkeling, and recreational diving. It's safe for showering and daily water exposure.

How long does the battery last in the GBA-900UU-3AER?

The battery in this model is designed to last approximately two years under normal usage conditions. Heavy use of functions like the Super Illuminator or frequent Bluetooth® connections can slightly reduce battery life.

Can the watch track distance without my smartphone?

Yes, after an initial calibration period where the watch links with your smartphone's GPS, it can use its built-in accelerometer to estimate distance independently. For optimal accuracy, periodic re-syncing with your phone's GPS is recommended.

What is the Super Illuminator feature?

The Super Illuminator is a high-brightness LED light that illuminates the watch face, making it exceptionally easy to read the time and other display information in dark environments with a press of a button.

What kind of battery does it use?

The watch uses a standard watch battery (Info needed: specific battery model, e.g., CR2032). When replacement is needed, it is recommended to have it done by an authorized service center to maintain the watch's water resistance.

Can I view my activity history directly on the watch?

While the watch tracks steps and distance, detailed activity history and graphs are best viewed through the G-SHOCK Connected app on your smartphone, which provides a comprehensive overview and management tools for your fitness data.

Troubleshooting

Watch won't connect to my smartphone via Bluetooth®.

Ensure Bluetooth® is enabled on your smartphone and the watch is in pairing mode (check the quick start guide for button combination). Make sure the G-SHOCK app is open and your phone is within close proximity to the watch. Try restarting both your phone and the watch. If issues persist, unpair the watch from your phone's Bluetooth® settings and attempt the pairing process again.

Distance or step tracking seems inaccurate.

For accurate distance tracking, ensure your watch has been recently linked with your smartphone's GPS for calibration. For step tracking, ensure your profile settings (like stride length, if available in the app) are correct. Walk naturally and consistently. Inaccurate readings can sometimes occur with irregular movements or carrying heavy items.

The Super Illuminator light is dim or not working.

The Super Illuminator is powered by the watch's battery. If the light is dim, it might indicate a low battery. While the battery has a 2-year life, heavy use of the illuminator can slightly reduce this. If the battery is new or recently replaced, and the light is still dim, contact customer support or a service center.

My watch shows the incorrect time.

If your watch is connected to your smartphone via Bluetooth®, it should automatically sync to the correct time. Check if the watch is successfully paired with the G-SHOCK app and that auto time adjustment is enabled. If not connected, manually set the time using the watch's buttons (refer to the user manual for specific instructions).

Pros and Cons

Pros

  • Exceptional G-Shock durability, built to withstand tough conditions.
  • Seamless smartphone connectivity via Bluetooth® for smart features and data tracking.
  • High level of water resistance (200m) suitable for diverse aquatic activities.
  • Clear and easy-to-read display in all conditions, thanks to Super Illuminator.
  • Comfortable and breathable soft urethane strap designed for extended wear.
  • Long-lasting battery life of up to two years, reducing frequent replacements.
  • Comprehensive suite of timekeeping and fitness functions.

Cons

  • Initial distance measurement and full GPS functionality rely on smartphone linkage.
  • Battery is not rechargeable and requires replacement after approximately two years.
  • The 51mm case size may be considered large or bulky for some wrist sizes.
  • Relies on a smartphone app for activity history review and detailed settings management.
  • Info needed: Specific limitations on app compatibility (e.g., OS versions).

Setup, Compatibility & Care Instructions

Setup

  1. Initial Power-On: Your watch should be ready to go out of the box. If not, ensure it's exposed to light (though this model primarily uses a battery, direct sunlight helps with initial internal charge stabilization in some G-Shocks).
  2. Download the App: Search for the official Casio G-SHOCK app (often called G-SHOCK Connected or similar) on your smartphone's app store (iOS or Android).
  3. Pair with Smartphone: Open the app and follow the on-screen instructions to pair your watch via Bluetooth®. You will typically need to put the watch into pairing mode by holding down a specific button (refer to the watch's quick start guide for exact button combinations).
  4. Time Sync & Settings: Once paired, the watch will automatically adjust its time, and you can configure various settings like alarms, world time cities, and notification preferences directly through the app.
  5. GPS Link for Distance Tracking: For initial distance tracking, ensure your phone's GPS is active and the watch is linked. This calibration allows the watch to measure distance more accurately even when not constantly connected to the phone's GPS.

Compatibility

  • Smartphone: Compatible with most iOS and Android smartphones that support Bluetooth® Low Energy. Ensure your phone's operating system is up-to-date for optimal performance.
  • App: Requires the official G-SHOCK Connected app from Casio for full functionality, including activity history and simplified settings management.

Care

  • Cleaning: Regularly wipe the watch case and strap with a soft, damp cloth to remove dirt, sweat, and oils. For stubborn grime, a mild soap solution can be used, ensuring to rinse thoroughly.
  • Water Exposure: While 200m water resistant, avoid operating buttons underwater unless specifically designed for it (this model allows it). After exposure to saltwater, rinse the watch with fresh water to prevent salt buildup and corrosion.
  • Temperature Extremes: Avoid exposing the watch to extreme temperatures (very hot or very cold) for prolonged periods, as this can affect battery life and internal components.
  • Battery Replacement: The battery has an estimated life of two years. When replacement is needed, it is recommended to have it done by a qualified watch technician to ensure the water resistance seal is properly maintained.
  • Strap Maintenance: The soft urethane strap is durable but can degrade over time with excessive exposure to chemicals (e.g., solvents, detergents) or prolonged direct sunlight. Clean it regularly and inspect for signs of wear.