GUHUAVMI T-Rex Ultra3 Smartwatch User Manual

1. Product Overview

The GUHUAVMI T-Rex Ultra3 is a professional-grade GPS smartwatch designed for outdoor enthusiasts and demanding environments. It features a rugged build, advanced health monitoring, precise positioning, and a long-lasting battery.

Figure 1: GUHUAVMI T-Rex Ultra3 Smartwatch with key features.

Key Features:

• Display: 1.43-inch AMOLED HD Large screen, 466*466 resolution, up to 2,000 nits peak brightness.
• Durability: Military-grade (MIL-STD 810H) certified, 316L Stainless Steel bezel, zinc alloy case, Panda glass screen.
• Water Resistance: 5ATM (50 meters) water-resistant, IP69K, supports 30m freediving.
• Positioning: Dual-band GPS (L1+L5) with 6 satellite systems (GPS, GLONASS, BDS, Galileo, NAVIC, QZSS).
• Battery Life: 500mAh battery, up to 20 days of normal use, 65 days standby, 22 hours continuous GPS.
• Health Monitoring: 24/7 Heart Rate, Blood Oxygen (SpO2), Sleep, and Stress monitoring.
• Sports Modes: 170+ sports modes with automatic recognition for 6 common activities.
• Connectivity: Bluetooth 5.3 for calls and app synchronization.
• Environmental Resistance: Operates in temperatures as low as -30°C and as high as 70°C.

2. Setup Guide

2.1 Unboxing and Initial Inspection

Carefully remove the smartwatch and its accessories from the packaging. Verify that all components are present: smartwatch (with standard strap), USB magnetic charging cable, and this instruction manual.

Figure 2: Unboxing the T-Rex Ultra3 Smartwatch.

2.2 Charging the Smartwatch

Before first use, fully charge the smartwatch. The charging time is approximately 2-3 hours.

1. Align the charging contacts of the charging cable with the charging port on the back of the watch. The cable is magnetic and will snap into place.
2. Connect the USB end of the charging cable to a 5V/0.5A-2A USB power adapter or a computer USB port.
3. The watch screen will display the charging status.
4. If the watch battery is too low, it may take 3-5 minutes for the screen to light up. Please wait for 5 minutes before checking the charging status.
5. Do not store the watch for a long time in a low-power state to avoid battery damage.

Figure 3: Charging instructions for the smartwatch.

2.3 App Connection (GloryFitPro)

To unlock the full potential of your smartwatch, connect it to the GloryFitPro app on your smartphone.

1. Scan the QR code provided in the manual or search for "GloryFitPro" in your phone's app store (available for Android 5.0+ and iOS 11.0+).
2. Install and open the app.
3. When prompted, grant necessary permissions (Bluetooth, location, notifications).
4. In the app, navigate to the "Device" page and click "Add device" or the "Scanning" icon.
5. Select your device model number (DM58) from the list.
6. During the connection process, a pop-up window will appear to confirm pairing. Confirm the pairing on both your phone and the watch. The call icon and data connection icon in the watch status bar will turn green upon successful connection.

Figure 4: App connection steps.

2.4 Time and Date Settings

Once connected to the GloryFitPro app, the watch's time and date will automatically synchronize with your phone. You can toggle 24-hour format within the watch settings or app.

3. Operating Instructions

3.1 Button Definitions

Figure 5: Smartwatch button layout and functions.

• Button 1 (Power Button):
  • Short press: Turn off the screen (from watch face) or return to watch face (from app list).
  • Long press (2s): Power on/off, restart, SOS (long press to display menu selection).
  • Press and hold (12s): Force restart the device.
• Button 2 (Return Key/Shortcut Key):
  • Short press: Return to the previous level/customized shortcut functions.
  • Short press (screen off): Light up the screen.
  • Short press (during exercise): Pause/continue exercise.
  • Short press (incoming call): Mute.
• Button 3 (Sports Button):
  • Short press: Enter the sports mode list.
  • Short press (screen off): Light up the screen.
  • Long press (2s during sports): Stop and end the sports activity.

3.2 Touch Screen Controls

Figure 6: Touch screen gesture controls.

• Swipe Down: Open the status bar.
• Swipe Up: Access the card shortcut function.
• Swipe Left: Enter the main menu interface.
• Swipe Right: Enter the notification information interface.
• Watch Face Customization: On the watch face interface, press and hold for 2-3 seconds to switch watch faces. Swipe left or right to browse and tap to select.

3.3 GPS Usage

The T-Rex Ultra3 features dual-band GPS with 6 satellite systems for precise positioning. For optimal performance, ensure the watch is connected to the GloryFitPro app.

1. Connect and bind the watch to the GloryFitPro app. The app will send GPS ephemeris data to the watch via Bluetooth, which helps shorten GPS positioning time.
2. If GPS is not successful, the watch will display an "AGPS has expired" reminder. Open the sports function with GPS enabled to update AGPS data.
3. The GloryFitPro app will re-acquire the latest GPS ephemeris data every morning at 09:00.
4. For best GPS positioning, choose an open area away from high-rise buildings.
5. After exercise, save the data, and the app will synchronize the exercise data, trajectory, and other details.

Figure 7: GPS usage interface examples.

3.4 Sports Modes and Tracking

The smartwatch offers over 170 sports modes and can automatically recognize 6 common sports (walking, running, outdoor cycling, elliptical machine, rowing machine, static). It also recognizes 25 strength training movements.

Figure 8: Overview of 170+ sports modes.

3.5 Health Monitoring

The T-Rex Ultra3 provides continuous 24/7 monitoring of various health metrics:

• Heart Rate Monitor: 24-hour continuous heart rate monitoring with alerts for abnormally high or low readings.
• Blood Oxygen Monitor (SpO2): Monitors blood oxygen saturation levels and provides alerts if they drop below healthy thresholds.
• Sleep Monitor: Tracks sleep stages (deep sleep, light sleep, REM sleep) and provides sleep analysis.
• Stress Monitor: Monitors stress levels throughout the day and offers guided breathing exercises.

Figure 9: 24/7 Health Monitoring features.

3.6 Bluetooth Calling and Music Control

With Bluetooth connectivity, you can manage calls and control music directly from your wrist.

• Bluetooth Calling: Answer, dial, and view call logs directly on the watch using its high-fidelity waterproof speakers and microphone.
• Music Control: Play, pause, skip tracks, and adjust volume for music playing on your connected smartphone.

Figure 10: Bluetooth call function on the smartwatch.

3.7 Outdoor Data and Navigation

The T-Rex Ultra3 provides essential outdoor data to help you stay informed and safe during your adventures.

• Compass: Dynamic compass for direction finding.
• Altimeter: Measures current altitude.
• Barometer: Provides atmospheric pressure readings.
• Weather Forecast: Displays current weather and forecasts.

Figure 11: Rich outdoor data displays.

4. Maintenance

4.1 Water Resistance Guidelines

The T-Rex Ultra3 is 5ATM (50 meters) water-resistant and IP69K rated, suitable for swimming, surfing, and kitesurfing, and supports 30m freediving. However, please observe the following:

• Do NOT wear the smartwatch in a sauna or hot shower to protect its sealing effectiveness from water vapor.
• Avoid exposing the watch to hot water or steam, as this can compromise its water resistance.
• If the watch comes into contact with water, especially saltwater, dry it thoroughly. If water enters the speaker cavity, gently shake the watch to expel residual water.

Figure 12: Water resistance and freediving support.

4.2 General Care and Cleaning

• Avoid placing the device in direct sunlight, such as on a car dashboard or window sill, or near heat sources like induction cookers, microwave ovens, or open flames.
• Clean the watch regularly with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, followed by drying.
• Do not use harsh chemicals or abrasive materials for cleaning.
• This device is equipped with a non-removable built-in battery. Do not attempt to replace the battery yourself.

5. Troubleshooting

5.1 App Connection Issues

• Watch not connecting to app: Ensure your phone's Bluetooth is enabled and location services are turned on. Make sure the watch is within Bluetooth range. Try restarting both the watch and your phone.
• Unbinding the App:
  • iOS: In the app, go to the "Device" interface, click "Unbind," then go to your phone's Bluetooth settings, find the device, and select "Forget this device."
  • Android: In the app, go to the "Device" interface, click "Unbind."

5.2 GPS Positioning Issues

• Slow or inaccurate GPS: Ensure the watch is connected to the GloryFitPro app to receive updated AGPS data. Perform GPS activities in open areas away from tall buildings or dense forests.

5.3 Battery and Charging Problems

• Watch not charging: Check that the charging cable is securely connected to both the watch and the power source. Ensure the power source is functional. Use a 5V/0.5A-2A adapter.
• Battery drains quickly: Adjust screen brightness, reduce the frequency of heart rate monitoring, or disable unnecessary notifications to conserve battery.

5.4 FCC Caution

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Figure 13: FCC Caution information.

6. Specifications

Figure 14: Product Parameters.

Figure 15: Product Size Diagram.

7. Warranty and Support

7.1 Warranty Information

The GUHUAVMI T-Rex Ultra3 Smartwatch comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims.

7.2 Customer Support

For any questions, technical assistance, or warranty claims, please contact your retailer or the official GUHUAVMI customer support channel. Refer to the product packaging or official website for the most up-to-date contact information.

8. User Tips

• Optimal App Connection: Always ensure your phone's Bluetooth and location services are active when trying to connect the watch to the GloryFitPro app for seamless data synchronization and feature access.
• Water Resistance Best Practices: While the watch is highly water-resistant, avoid exposing it to hot water or steam (e.g., in saunas or hot showers) to maintain the integrity of its seals.
• GPS Accuracy: For the most accurate GPS tracking during outdoor activities, start your workout in an open area with a clear view of the sky.
• Battery Preservation: If you need to extend battery life, consider adjusting screen brightness, reducing the frequency of continuous health monitoring, and managing notifications.