Product Overview
The CASIO G-Shock FROGMAN GWF-A1000-1AJF is an advanced ISO 200m diver-level water resistant watch, part of the MASTER OF G series. It features an analog display for Home Time, Dual Time, tide information, and dive time measurement. Constructed with a carbon monocoque structure and carbon fiber-reinforced resin, it offers exceptional durability and resistance to water absorption and hydrolysis. This model integrates Bluetooth connectivity for smartphone linking, enabling convenient settings configuration and data management.

Figure 1: Front view of the CASIO G-Shock FROGMAN GWF-A1000-1AJF Solar Watch.
Setup
Initial Charging
Your watch is equipped with Tough Solar Power. To ensure optimal performance, expose the watch face to direct sunlight or strong artificial light for several hours before initial use. This will charge the internal Lithium Ion battery.
Smartphone Link (Bluetooth)
- Download the G-SHOCK Connected app from your smartphone's app store.
- Enable Bluetooth on your smartphone.
- Follow the on-screen instructions within the G-SHOCK Connected app to pair your watch. This allows for automatic time adjustment, settings configuration, and data transfer.
Multi-Band 6 Atomic Timekeeping
Once paired with your smartphone or in an area with radio wave reception, the watch will automatically receive time calibration signals, ensuring accurate timekeeping across various regions.
Operating Instructions
Basic Timekeeping
The watch displays Home Time and Dual Time in analog format. Refer to the G-SHOCK Connected app for detailed instructions on setting and switching between time zones manually if needed.
Diver Functions
- Tide Information: Access tide data for approximately 3,000 global locations via the G-SHOCK Connected app.
- Dive Time Measurement: The watch is capable of measuring dive times. Consult the full user manual (available via the app or Casio website) for specific operational procedures for dive mode.
- Diving Log Records: View and manage your diving log records efficiently through the G-SHOCK Connected app.
Activity Tracking
The watch can track various activities, including running, swimming, cycling, and weightlifting. Activity data is sent to the G-SHOCK Connected app for detailed analysis and management.
Maintenance
Charging
Regular exposure to light is essential for maintaining the charge of the Tough Solar Power system. Avoid prolonged storage in dark places to prevent battery depletion.
Cleaning
Wipe the watch with a soft, dry cloth. For stubborn dirt, use a mild soap solution and rinse thoroughly with fresh water, especially after exposure to saltwater. Ensure all buttons are fully depressed before rinsing.
Water Resistance
The watch is ISO 200m water resistant. This rating is suitable for scuba diving. After diving in saltwater, rinse the watch thoroughly with fresh water and dry it completely.
Troubleshooting
Watch Not Syncing with Smartphone
- Ensure Bluetooth is enabled on your smartphone and the G-SHOCK Connected app is running.
- Check if the watch is within range of your smartphone.
- Verify that the watch's battery level is sufficient.
- Try restarting both the watch (if applicable) and the smartphone.
Inaccurate Time Display
- Confirm successful reception of Multi-Band 6 atomic timekeeping signals or a stable Bluetooth connection to your smartphone.
- Manually adjust the time via the G-SHOCK Connected app if automatic adjustment fails.
Specifications
| Feature | Description |
|---|---|
| Model Number | GWF-A1000-1AJF |
| Brand | G-Shock (CASIO) |
| Water Resistance | ISO 200 Meters Diver-Level |
| Power Source | Tough Solar Power (1 Lithium Ion battery included) |
| Timekeeping | Multi-Band 6 Atomic Timekeeping, Bluetooth Smartphone Link |
| Case Structure | Carbon Monocoque Structure, Carbon Fiber-Reinforced Resin |
| Crystal Material | Hardened Mineral Glass |
| Clasp Type | Tang Buckle |
| Dimensions | 5.75 x 4.96 x 3.54 inches (Package); 4.2 ounces (Item) |
Warranty and Support
This product comes with Casio's one-year international warranty if purchased from an authorized retailer. For warranty claims or technical support, please contact your point of purchase or visit the official Casio G-Shock website for service center information.





